bluuebunny/crossref_metadata_2025 huggingface dataset:
Selected Cribroperidinium species (Dinophyceae) from the Kimmeridgian and Volgian of northwest Europe
Authors: Bailey David A.
Published: July 2010

Abstract. Two new dinoflagellate species, Cribroperidinium complexum and C. erymnoseptum are described from the Kimmeridgian of the Norwegian Continental Shelf and Spitzbergen. The morphotypes described as Cribroperidinium sp. A by Davey (1982) from the Portlandian of Denmark, are thought to be conspecific with Cribroperidinium gigas Raynaud 1978. The holotype of Cribroperidinium longicorne (Downie) Lentin & Williams 1985 has been examined and is discussed.
Micropalaeontology of the hydrothermal region in the Guaymas Basin, Mexico
Authors: Ayala-López Adriana , Molina-Cruz Adolfo
Published: July 2010

Abstract. A micropalaeontological analysis of 40 sedimentary samples from a hydrothermal region in the Guaymas Basin, Gulf of California, Mexico, was carried out to describe microenvironments. These microenvironments were defined through a Q-mode Factor analysis of species abundance data from the benthic foraminiferal biocoenoses and thanatocoenoses. The benthic foraminiferal results were correlated with the biogeographic patterns of diatoms, radiolarians, planktonic foraminifers and ostracods through a ‘graphic-multivariate analysis’. Although the microenvironments have a patchy distribution within the hydrothermal region, it is possible to define the following: (1) the ‘hydrothermal environment’, in which the benthic foraminifera Bulimina mexicana and Globocassidulina sp. cf. C. subglobosa coexist with the mollusc Calyptogena pacifica, even though the almost direct influence of the hydrothermal fluids drastically reduces the presence of the microfauna; (2) the ‘bacterial environment’, in which Trochammina sp. and Recurvoides sp. are associated with bacterial mats; and (3) the ‘cool environment’, further out from the direct hydrothermal influence. In this microenvironment the benthic foraminifera Bulimina spinosa, Bolivina seminuda and Cibicides sp. are common. These three benthic foraminiferal assemblages are different from other assemblages which live in the Guaymas Basin but are not influenced by hydrothermal fluids. In the non-hydrothermal regions, Uvigerina peregrina and Buliminella tenuata are common. The analysis of subsurface samples shows the same patterns as the superficial samples.
DSDP Site 594, Chatham Rise, New Zealand - Late Neogene planktonic foraminiferal biostratigraphy revised
Authors: Hornibrook N. De B. , Jenkins D. G.
Published: July 2010

Abstract. A restudy of the planktonic foraminifera at DSDP Leg 90, Site 594, has been made and consequently a revised scheme of late Neogene zones has been necessary. The Globorotalia sphericomiozea Zone (including G. conomiozea) is contracted to occupy a much smaller interval just below the Miocene/Pliocene boundary and the G. puncticulata, G. inflata and G. truncatulinoides Zones have been expanded. In the uppermost Miocene and Lower Pliocene, the standard regional planktonic foraminiferal datums provide a good correlation with DSDP Leg 29 Hole 284, DSDP Leg 90 Hole 593 and with New Zealand on-land palaeomagnetically-zoned sequences. They do not, however, correlate with the magnetochronology adopted in the Leg 90 Initial Reports for this interval in Hole 594 in which Chrons 4–6 are offset downwards against the foraminiferal datums. It is possible that there are unrecognized hiatuses in the Plio-Pleistocene.Higher in the Pliocene, very low species diversity of the cold-water faunas, scarcity of warm-water foraminiferal zonal species, and their much later appearance in Hole 594, contribute to a recognition that the Subtropical Convergence has been an effective barrier against the southwards penetration of most warmer water planktonic species.Neoacarinina blowi Thompson and Globorotalia crozetensis Thompson, are recorded from the New Zealand area for the first time
Palaeocene–Eocene deep water agglutinated foraminifera from the Numidian Flysch (Rif, Northern Morocco): their significance for the palaeoceanography of the Gibraltar gateway
Authors: Kaminski Michael A. , Kuhnt Wolfgang , Radley Jon D.
Published: July 2010

Abstract. A lower bathyal to abyssal agglutinated foraminiferal fauna (over 78 taxa belonging to 31 genera) is documented from Palaeocene–Eocene deep-water sediments of the Numidian Flysch (Talaa Lakrah Unit) in Northern Morocco. The sample locality is adjacent to the Strait of Gibraltar, which comprised an oceanic ‘gateway’ between the Tethys Ocean and the North Atlantic during the Palaeogene. The chronostratigraphy of the section is based upon long-distance comparisons with the stratigraphic ranges of identified species in the North Atlantic region and the Polish Carpathians. Although no major evolutionary turnover among deep-water agglutinated foraminifera (DWAF) is observed across the Palaeocene/Eocene boundary, a change from Palaeocene Aschemocella- and Trochamminoides-dominated assemblages to an early Eocene Glomospira assemblage is recognized. This Glomospira biofacies occurs throughout the North Atlantic and western Tethys and may indicate lowered productivity and widespread oxygenated deep-water conditions during the early Eocene greenhouse conditions. A change to an overlying Reticulophragmium amplectens biofacies in green claystones reflects renewed higher productivity. Taxonomic affinities and the succession of benthic foraminiferal assemblages from the Gibraltar gateway display greater affinities to Tethyan assemblages than North Atlantic assemblages. This is interpreted as faunal evidence for a late Palaeocene to early Eocene equivalent of ‘Mediterranean outflow water’, flowing from the western Tethys into the Atlantic.
Foraminiferal assemblages from the late Lower and Middle Cenomanian of Speeton (North Yorkshire, UK): relationships with sea-level fluctuations and watermass distribution
Authors: Mitchell S. F.
Published: July 2010

Abstract. Twenty-seven marl samples from the late Lower and Middle Cenomanian of Speeton (North Yorkshire, UK) have been studied and six benthic foraminiferal assemblages (A to F) have been recognized by cluster analysis. These assemblages can be classified according to their constituent agglutinated foraminifera. Assemblages characterized by high abundances of non-calcareous agglutinates (A and E) have low numbers of planktics and are associated with cold-water pulse faunas of mid Russian affinity (belemnites, brachiopods and bivalves). These are interpreted as representing a cold North Sea watermass. Assemblages characterized by high abundances of planktics (B and C) are associated with pulse faunas that lack cold-water elements and are interpreted as representing a warm watermass. The foraminiferal assemblages are also related to sea-level fluctuations and individual assemblages were probably depth controlled. The assemblages can. therefore, be used to construct a sea-level curve and this agrees with the placement of critical sequence stratigraphic surfaces (e.g. sequence boundaries and flooding surfaces).
Protobatioladinium elatmaensis sp. nov., a dinoflagellate cyst from the Bathonian of Russia
Authors: Riding James B. , Ilyina Vera I.
Published: July 2010

Abstract. Protobatioladinium elatmaensis sp. nov. is a distinctive Lower–Middle Bathonian dinoflagellate cyst present, often abundantly, throughout the Russian Platform. The species appears to be a reliable stratigraphical marker and is the oldest representative of the genus.
New species of Miocene cytheracean Ostracoda from the Pohang Basin, SE Korea
Authors: Huh Min , Whatley Robin
Published: July 2010

Abstract. Seven new species of ostracods are described from the Miocene deposits of the Pohang Basin in southeastern area, Korea. Baffinicythere paiki is only the ihird record of the genus Baffinicythere in the world. In this study, the following new species are erected: Callistocythere kyongjuensis, C. seojeongriensis, Baffinicythere paiki, Urocythereis pohangensis, Trachyleberis leei, T. praeniitsumai and Acanthocythereis koreana.
An early record of the genus Cytheridella Daday, 1905 (Ostracoda, Limnocytheridae, Timiriaseviinae) from the Upper Cretaceous of Mali, West Africa: palaeobiogeographical and palaeoecological considerations
Authors: Colin Jean-Paul , Tambareau Yvette , Krasheninnikov Valery A.
Published: July 2010

Abstract. The limnic ostracod genus Cytheridella Daday, 1905 (Limnocytheridae, Timiriaseviinae), previously only known from Plio–Pleistocene sediments and Recent lacustrine environments of South and Central America, the Caribbean Islands, Florida and Equatorial Africa, and from earliest Eocene to Early Oligocene Eurasian localities, is found for the first time in the Upper Cretaceous (undifferentiated Campanian–Early Maastrichtian) of northern Mali, West Africa, suggesting an African origin for the genus. The association with the brackish-water ostracod genus Sarlatina suggests a mixo- or oligohaline environment for the Cretaceous species of Cytheridella.
Techniques for the concentration of foraminifera from coastal salt meadow sediments
Authors: Lehmann Gunnar , Röttger Rudolf
Published: July 2010

Abstract. INTRODUCTIONConcentration of modern foraminifera from sediment samples is commonly performed by the heavy liquid carbon tetrachloride (CCI4) flotation method. From mainly inorganic, siliclastic sediments from marine habitats, about 94% of the foraminifera contained within a sample can be isolated in the first step (Lutze, 1968). This procedure is used in order to reduce the time taken to examine the foraminiferal content of a sample. However, it is not practical in all cases. Surface sediments of salt meadows from the west coast of the German Bight (southern North Sea) can be divided into two main types: (1) in seaward parts with only a patchy distribution of spermatophytes there is soft mud with a high content of detritus (faecal pellets and plant material) and low content of inorganic components (clay and finest sand); (2) in landward parts there is low moisture soil with a high content of living and dead plant roots similar to that of terrestrial meadows. Foraminifera of sediments of these kinds cannot be isolated by the flotation method for the following reasons.For sediment of type 1, if fractions 60–1000 μm (all clay eliminated by washing) have been dried in order to submit them to the flotation method, a serious problem arises. Flocky/grainy detritus aggregates to a cement-hard mass which encloses all the foraminifera. This ‘cake’ cannot be disaggregated without damaging or destroying the foraminifera.For sediment of type 2, when sediment treated the same way as sediment of type 1 is dried, fine plant remains, mainly . . .
Note on a new method of using hydrofluoric acid for the study of conodonts in cherts in the Torlesse terrane, New Zealand
Authors: Ford Philip B. , Lee Daphne E.
Published: July 2010

Abstract. A number of papers have described procedures for the recovery of conodonts from cherts by dissolution in hydrofluoric acid (Ethington & Austin, 1993; Stone, 1987), but, in our experience, the techniques have generally led to fragmentation of the conodont specimens.A new method of etching by hydrofluoric acid allows observation of whole conodonts in chert samples. The method was developed on material of Permian age from New Zealand. Although this technique does not, at present, enable entire conodonts to be extracted from the rock, it makes it possible to photograph conodonts in even highly microbrecciated cherts, and the technique should be applicable to conodont-bearing cherts of any age.The new technique involves HF etching of the surface of small samples of chert, preferably split along bedding planes. Samples weighing about 5 kg were collected in situ from siliceous pelagites (cherts) from the Torlesse terrane, near Meyers Pass, South Canterbury (Ford, 1995). The blocks were split or chipped along bedding planes to produce a large number of thin, 5 cm square samples. These wafer-sized chips were placed in a 1 litre polypropylene (NOT glass) beaker, and covered with 35% HF.The chips slowly turned white over a period of 15–30 min as a reaction gel formed on the surface of each chip. When whitened, the HF was carefully decanted off and replaced with water. Taking care not to abrade the now soft skin of reaction gel, the samples were gently rinsed with water until the HF was neutralized sufficiently for . . .
Planktic and benthic foraminiferal distribution patterns as a response to changes in surface fertility and ocean circulation: a case study from the Late Albian ‘Amadeus Segment’ (Central Italy)
Authors: Galeotti Simone
Published: July 2010

Abstract. A combined geochemical and micropalaeontological study of the late Albian ‘Amadeus Segment’ of the Aptian–Albian organic-rich Scisti a Fucoidi Formation in central Italy shows that planktic foraminiferal assemblages record changes in abundance and composition which are markedly related to CaCO3 and Total Organic Carbon content of the sediments. The distribution pattern of different genera seems to record changes in nutrient supply and surface water temperature. Changes in palaeoceanographic regime are also reflected in abundance, composition and trophic structure of benthic foraminiferal assemblages as a response to variations of oxygen content and organic flux to the sea floor.
The distribution of Triebelina raripila and Carinocythereis carinata (Ostracoda) from the Middle Miocene of the Central Paratethys and their palaeogeographic implications
Authors: Szczechura J.
Published: July 2010

Abstract. Late Middle Miocene (Upper Badenian) strata of the Fore-Carpathian Depression of Poland yield a shallow-water ostracod fauna which contains the species Triebelina raripila (G. W. Müller, 1894) and Carinocythereis carinata (Roemer, 1838). The palaeobiogeographic distribution of the two main species suggests, that in the late Middle Miocene, Central Paratethys was still connected to the Mediterranean, although still separated from the Eastern Paratethys and from southeastern Eurasia. The continuous occurrence of Triebelina raripila and Carinocythereis carinata in the Mediterranean basins, from the Early Miocene to Recent, indicates that marine conditions existed throughout, thereby allowing them to survive the Late Miocene salinity crisis.
Freshwater Ostracoda from Tarawa, Kiribati: their implications for dispersal mechanisms
Authors: Eagar Stephen H.
Published: July 2010

Abstract. Tarawa Atoll, Gilbert Islands (1° 30′N, 173° 00′E) is an isolated place, comparatively recently emergent – 2500 years bp and 2 – 3 m above present sea-level (Marshall & Jacobson, 1985). During the course of a study of the marine ostracods (Eagar, in press) it was noted that there are relatively few places where freshwater is visible on the surface of the atoll. This is not unusual, given the low precipitation (154 mm a−1) and the daytime temperatures of Tarawa (27–30°C). Five freshwater ponds on South Tarawa (Fig. 1) were examined and two species of Ostracoda were found: Cyprinotus cingalensis Brady, 1886 and Limnocythere notodonta Vávra, 1906. At Bairiki (locality A), a pond adjacent to the causeway linking Bairiki with Betio was sampled and yielded abundant Cyprinotus cingalensis. Other ponds were found at Ambo (Locality B) and Temaiku Bight (Localities C and D with two ponds). Only the pond (Locality B), an established babai pit (taro; Cyrtosperma chamissonis), adjacent to the roadside at Ambo yielded further specimens of the ostracod Limnocythere notodonta, although in low numbers.The question of how these species were introduced onto Tarawa Atoll is intriguing. C. cingalensis is known from Ceylon (Brady, 1886), Hawaii and the Sandwich Islands. The record by Vávra (1906) from Australia may be incorrect. Limnocythere notodonta was previously recorded only from Java (Vávra, 1906). Both species may have been distributed in the same way that Sars (e.g., Sars, 1896) transported species from different parts of the world to Norway to describe . . .
Trans-Atlantic dinoflagellate cyst stratigraphy across the Cenomanian–Turonian (Cretaceous) Stage boundary
Authors: Dodsworth Paul
Published: July 2010

Abstract. The principal palynological proxy for the Cenomanian–Turonian Stage boundary, the top of consistent/common Litosphaeridium siphoniphorum (a dinoflagellate cyst), occurs in Greenhorn Bed 73 at the international stratotype section, west of Pueblo, Colorado, USA. This datum occurs in the same position, as indicated by planktonic foraminifera (a few beds higher than the range top of R. cushmani), ammonites (upper part of the S. gracile/M. geslinianum Zone) and geochemistry (immediately below maximum δ13C values), at Pueblo (Western Interior Basin) and localities in southern England (Wessex–Paris Basin) and northern Germany (Lower Saxony Basin). Of over 100 dinoflagellate cyst taxa recorded from Pueblo and a correlative section at Lulworth, southern England, possibly as few as six do not range into the Turonian. In the uppermost Cenomanian – lowermost Turonian succession at Pueblo, there are no consistent absences of any common taxa (with four exceptions) and there is no evidence for a collapse in cyst-forming dinoflagellate populations during the Cenomanian–Turonian boundary mass extinction interval/‘oceanic anoxic event’. However, the composition of palynological assemblages from the Upper Cenomanian appears to reflect palaeoenvironmental stress and/or an increase in the supply of land-derived and relatively nearshore palynomorphs.
Ynezidinium, a new genus within the Gonyaulacaceae (fossil Dinophyceae)
Authors: Lucas-Clark Joyce , Helenes Javier
Published: July 2010

Abstract. Ynezidinium malloyi gen. nov., sp. nov. shows paratabulation details that indicate it belongs to the Family Gonyaulacaceae, subfamily Leptodiniodeae, but which, in combination, distinguish it from previously described genera. The paratabulation details include: (1) pentagonal sixth precingular (li) in contact with both fourth and first apicals (A and lu); (2) elongate and subparallel fourth and first apicals; (3) straight to slightly sigmoidal sulcal region; (4) lack of small intercalary (K) paraplates; and (5) Q/B preapical arrangement. Other species herein assigned to Ynezidinium include: Ynezidinium brevisulcatum (Michoux, 1985) comb. nov., Y. latolineatum (Yun, 1981) comb. nov., Y. pentahedrias (Damassa, 1979) comb. nov. and Y. waipawaense (Wilson, 1988) comb. nov.
Two dinoflagellate cyst marker horizons in the Bathonian of the Nettleton Bottom Borehole, Lincolnshire, England
Authors: Riding J. B.
Published: July 2010

Abstract. The occurrences of large numbers (floods) of Meiourogonyaulax reticulata Dodekova, 1975 in the Blisworth Clay and of Pareodinia prolongata Sarjeant, 1959 in the Cornbrash of the Nettleton Bottom Borehole are reported and their biostratigraphical value discussed.
Ontogenesis and stratigraphy of the ostracod Veeniacythereis jezzineensis (Bischoff, 1963)
Authors: Rosenfeld A. , Raab M.
Published: July 2010

Abstract. Veeniacythereis jezzineensis (Bischoff, 1963) occurs in Israel throughout the Upper Albian-Cenomanian. It comprises continuously ornamented-variable forms, including A-3 to A molt stages. The ontogenetic lineages reveal a pre-adult sexual-dimorphism. It is suggested that Cythereis maghrebensis Bassoullet & Damotte and Cythereis streblolophata Al-Abdul-Razzaq & Grosdidier are junior synonyms of V. jezzineensis.
Paulanoblella, nomen novum (Radiolaria) replaces Noblella Kozur, Mostler & Repetski, 1996, a homonym of Noblella Barbour, 1930 (Amphibia)
Authors: Kozur Heinz W. , Repetski J. E.
Published: July 2010

Abstract. Kozur et al. (1996) reported and described some well-preserved Lower Ordovician (Tremadocian) Radiolaria from central Nevada and established several new taxa, among them a new genus Noblella, assigned to the Family Protoentactiniidae Kozur, Mostler & Repetski, 1996. Dr J. K. Page kindly informed us that the genus Noblella already was established for an amphibian genus, Family Brachycephalidae, type species N. peruviana (Noble), byBarbour (1930; p. 81). Therefore, the genus name Noblella Kozur, Mostler & Repetski, 1996 non! Noblella Barbour, 1930, is invalid because of homonymy. We here replace this junior homonym with Paulanoblella Kozur & Repetski, nomen novum.Genus Paulanoblella Kozur & Repetski, nomen novumDerivation. The new name is in honour of noted Radiolaria researcher, Dr Paula Noble, Reno, Nevada.Diagnosis. Unchanged (see Kozur et al., 1996, pp. 255, 266).Holotype. Unchanged (see Kozur et al., 1996, pp. 255, 266).
Foraminiferal zonation of early Oligocene deposits (Selztal Group, Latdorfian, Rupelian) in the Mainz Basin, Germany
Authors: Grimm Kirsten I.
Published: July 2010

Abstract. The foraminiferal zonation reported here is valid for the marine Oligocene deposits in the Mainz Basin. Thirteen zones and one subzone are defined in the basin facies, which may be correlated biostratigraphically with the current nannoplankton zones and also lithostratigraphically. The zonation for the beach facies, already described by the present author, is incorporated into the scheme. It is possible, therefore, to generate a high resolution foraminiferal biostratigraphical subdivision of the marine Oligocene deposits of the Mainz Basin.
A new species of Omphalocyclus (Foraminiferida) from the Upper Cretaceous of Jamaica and its stratigraphical significance
Authors: Gunter Gavin C. , Robinson Edward , Mitchell Simon F.
Published: July 2010

Abstract. The orbitoidal larger foraminifer Omphalocyclus maldonensis n. sp. is described from the Maldon Inlier of northwestern Jamaica, being the first record of this genus from the island. The limestone in which it occurs contains the Upper Cretaceous (Upper Maastrichtian) Titanosarcolites rudist fauna, together with larger foraminiferal specimens identified as Orbitoides megaloformis Papp & Küpper. The new species differs from Omphalocyclus macroporus, the only other widely recognized species, in possessing a much smaller nucleus. At least some of the earlier records of Omphalocyclus from the Upper Cretaceous of Venezuela and Cuba should probably be referred to O. maldonensis.
Verification of the Algirosphaera robusta–Sphaerocalyptra quadridentata (coccolithophores) life-cycle association
Authors: Triantaphyllou M. V. , Dimiza M. D.
Published: July 2010

Abstract. Living coccolithophores were collected from eight stations along a transect in the gulf of Korthi (southeastern Andros island, Aegean Sea, Eastern Mediterranean) in August 2001. Samples were collected from 0–120 m water depth to determine the cell density, the species composition and the biogeographical (spatial and vertical) distribution of the coccolithophore biocommunities in coastal marine ecosystems. The studies revealed an impressive heterococcolith–holococcolith combination coccosphere (SEM micrograph) involving the species Algirosphaera robusta and Sphaerocalyptra quadridentata. In addition, a second association was observed by light microscopy. This discovery verifies the suggestions of Kamptner (1941) and provides strong proof on the assignment of these two ‘species’ in a common life cycle, increasing significantly our knowledge of life-cycle pairings ecology.
The Recent foraminifera and facies of the Bass Canyon: a temperate submarine canyon in Gippsland, Australia
Authors: Smith Andrew J. , Gallagher Stephen J.
Published: July 2010

Abstract. This study describes the foraminifera and facies of a large submarine canyon: the Bass Canyon, in the Gippsland Basin off the coast of southeastern Australia. The study incorporates facies analyses and interpretations of three types of foraminiferal distributional data: forms alive at time of collection, recently dead forms and relict forms. Four principle biofacies types occur: (1) middle shelf to shelf-break carbonate sand; (2) oxic upper to middle bathyal carbonate sand and gravel, with abundant bryozoans; (3) reduced oxic middle bathyal carbonate sand and gravel and (4) lower bathyal oxic muddy sand to Globigerina Ooze.Correspondence Analysis of the 61 parameters (percentage abundance of foraminifera and % carbonate) in 36 samples yielded a clear depth-related pattern, although other related parameters such as dissolved oxygen and substrate also exert control on the foraminiferal assemblages.Relict foraminifera are restricted to shelfal depths, shallower than 145 m. This pattern is similar to other shelf regions in Australia, where shelf areas were exposed during the Last Glacial Maximum, reworking shelf facies shallower than 150 m. The distribution of living foraminifera is similar to the distribution of the total assemblage, suggesting that the region has not been significantly mixed by wave, slump or bioturbation processes.The majority of the modern Bass Canyon foraminiferal assemblages are cosmopolitan species, with few (semi-)endemic taxa that are mostly restricted to the shelf. These modern deeper-living forms are more conservative since they evolved in relatively lower stress eutrophic environments than their shallower oligotrophic dwelling contemporaries.The foraminiferal and facies analogues of this study on the Bass Canyon may be used as a modern palaeoenvironmental analyses of the Gippsland and Otway Neogene sedimentary deep-sea successions. This will lead ultimately to a better understanding of the evolution of the basins in southeastern Australia, in an area influenced by the Southern Ocean during the Cenozoic.
Diatom (Bacillariophyceae) flora of early Holocene freshwater sediments from Skalafjord, Faeroe Islands
Authors: Witon Ewa , Witkowski Andrzej
Published: July 2010

Abstract. Relative abundance data of diatom (Bacillariophyceae) species were generated for sediment core SKPC-01B from the Skalafjord, Faeroe Islands. The record shows distinct temporal changes in species composition. In the lowermost 65 cm of the 230 cm long core a species-rich freshwater diatom assemblage was found. Most of the taxa observed in this section are typical of oligotrophic to dystrophic lakes in northern Europe (Scandinavia, Iceland and Spitsbergen). Above this interval the diatom flora is dominated by marine taxa. The change from a freshwater to a marine flora is inferred to be caused by rising sea-level that took place about 7700–6400 years BP. Drastic changes in the diatom species composition within the transitional core section show that environmental change in the Skalafjord took place in several pulses. The first stage included strong inflow (possibly catastrophic) of marine waters. As a possible trigger of this phenomenon the tsunami released by the Storegga Slide is proposed. Before the final flooding by marine waters, freshwater conditions were re-established within the Skalafjord. These results have important implications for the interpretation of the palaeogeographical development of the Eysturoy area. Hence, it is suggested that the Storegga Slide led to inflow of marine waters at a distinctly lower water level in the area of the Skalafjord than proposed in recent publications and that the inundation of the threshold in the fjord happened after the tsunami.
Ankumia van Veen, 1932 retained and not replaced by the junior taxon Platella Coryell & Fields, 1937 (Ostracoda, Platycopina, Cytherelloidea)
Authors: Malz Heinz , Lord Alan
Published: July 2010

Abstract. Recently, the monotypic ostracod genus Ankumia van Veen, 1932 was abandoned as nomen dubium by Jones (2003, p. 85) in favour of Platella Coryell & Fields, 1937 and a new combination was proposed for the type species of Ankumia, i.e. Platella bosqueti (van Veen, 1932). However, Ankumia bosqueti from the Maastrichtian of The Netherlands was introduced as an available taxon and, as documented by Jones (2003), the specific name is valid for recognizing the species in which ‘pathological individuals with retained moults’ occur. Therefore, there is no reason to treat Ankumia as nomen dubium. Yet, although there is no doubt about the cytherellid relationship of the species, two taxonomical questions still remain.(1) Do pathological individuals of cytherellids justify specific and/or generic ranking? Certainly they do not, and demonstration of a corresponding ‘normal’ species (including ‘pathological individuals’) among the associated cytherellids is wanting. On the other hand, if these pathological individuals can be proven as representing a discrete pathological genus, Ankumia remains as a valid genus to characterize the available species name bosqueti.(2) Why should Ankumia be abandoned in favour of Platella? When van den Bold (1967, pp. 306, 308) compared Coryell & Fields’ original Gatún ostracod fauna with his own collection from the Neogene Gatún Formation in the Panama Canal Zone, he recognized the type species, Platella gatunensis, as a small-sized cytherellid moult. Over the years about a dozen small- and normal-sized cytherellid species from all over the world have been assigned to Platella, ignoring the questionable taxonomic . . .
Alan Charles Higgins (1936–2004)
Authors: Austin Ronald L. , Owens Bernard , Spinner Edwin G.
Published: July 2010

Abstract. Alan Higgins was born in Hanley, Staffordshire on 16 December 1936, the youngest of three children. Throughout his childhood he was fascinated by the natural history of the nearby Peak District and it was not surprising that sciences played an important part in his education at Hanley High School. In 1955, he went to the University of Sheffield to study Geology and obtained a 2(1) degree in 1958. During those early years in Sheffield, he came under the influence of the late Professor Leslie Moore and, on graduation, was encouraged by him to undertake research on Namurian conodonts. At that time, little was known of the true potential of conodonts and, indeed, almost nothing of their occurrence in Upper Carboniferous rocks. Alan collected samples extensively throughout the southern Pennine region, often working closely with the staff of the Geological Survey and generated the first Namurian conodont zonation for the British Isles. He exploited every opportunity to prove the value of conodont studies outside the Carboniferous Period and, in 1962, published the results of an investigation on the microfaunas found in the Durness Limestone of northwest Scotland. His PhD was completed in 1961.In late 1961, he was awarded a DSIR (Government) Fellowship which allowed him to work in Brussels at the offices of the Belgian Geological Survey whilst investigating the stratigraphic distribution of conodonts in the Namurian type sections of the Namur Basin. These studies, carried out in close collaboration with Jos Bouckaert, established detailed correlations with the British sequences . . .
Trouble in Paradise? A comparison of 1953 and 2005 benthonic foraminiferal seafloor assemblages at the Ibis Field, offshore eastern Trinidad, West Indies
Authors: Wilson Brent
Published: July 2010

Abstract. Foraminiferal communities are not static, but change in response to environmental perturbations. Given sufficient time, the change will be recorded in the total (live+dead) seafloor assemblage, from which valuable information regarding environmental trends can be obtained by re-sampling assemblages at the decadal scale.The seafloor assemblage in the 5 km × 6 km Ibis Field, off southeast Trinidad, first surveyed in 1953, was re-examined in 2005. The fauna had changed markedly between the surveys. Overall increases in the proportional abundances of Uvigerina subperegrina, Ammonia pauciloculata/Rolhausenia rolhauseni and Pseudononion atlanticum indicate an increase in nutrient supply that apparently killed off Cibicidoides pseudoungerianus and Miliolinella subrotunda, and reduced the relative abundance of Hanzawaia concentrica, but did not affect the relative abundance of Cancris sagrai. As shown by similar 1953 and 2005 planktonic/benthonic foraminiferal ratios, the increased nutrient supply impacted on both surface and bottom waters.Of the six most abundant species in 2005, five showed the same general biogeographical distributions within the field in 1953 and 2005. However, whereas the proportional abundance of Uvigerina subperegrina in 1953 increased southwards, in 2005 it increased northwards.Trinidad cannot be the source for the nutrient enrichment: the island lies down-current from the Ibis Field. Sources must therefore be sought up-current and to the southeast, in the Amazon, Essequibo and Orinoco river basins, or along the South American shoreline. It is speculated that the nutrient enrichment may be a consequence of increased phytoplankton primary production associated with nitrogen-rich run-off from South American sugarcane plantations, or from flushing of organic carbon from poorly regulated sewage systems or shrimp farms in South America.
Sanyuania cuneata Zhao & Whatley, 1992 (Ostracoda, Cytheroidea, Cytherideidae) from Japan: morphology, distribution and environmental significance
Authors: Tanaka Gengo
Published: July 2010

Abstract. Sanyuania cuneata Zhao & Whatley, 1992 was reported initially from Late Pleistocene core samples from the northern part of the Yellow Sea and Recent sediments collected from supra tidal pools (17 practical salinity unit (psu)) in Xiangshangang Bay, East China Sea (Zhao & Whatley, 1992). Later, specimens were discovered, but not identified, in Lake Nakaumi, Shimane Prefecture, SW Japan (Fig. 1) (as Cytheridae gen. et. sp. indet. by Tanaka et al. (1998) and Sanyuania sp. by Seto et al. (1999)). Further examination of these Japanese specimens has clarified that they are conspecific with the Chinese specimens. This has provided an opportunity to review the distribution (Fig. 1) and potential environmental significance of Sanyuania cuneata and, for the first time, to describe its appendages (Fig. 2).Specimens figured herein were recovered from Lake Nakaumi (35°26′ 50″ N, 133°07′50″ E) at a depth of 0.3–6.0 m and salinity of 8–17 psu on 9 September 1998. The surface of the sediment was covered by the byssus of the mussel Musculista senhousia (Benson, 1842).Sanyuania cuneata is probably endemic to the East China Sea and the southwestern part of the Sea of Japan and is a potentially useful palaeoenvironmental indicator of brackish (steno-haline) environments in the area. By using the oxygen isotopic data from planktonic foraminifers and the estimated value of salinity flowing into the Japan Sea, Matsui et al. (1998) approximated that the salinity of the surface water of Japan Sea declined to about 20 psu during the Last Glacial Maximum . . .
Population structures among epiphytal foraminiferal communities, Nevis, West Indies
Authors: Wilson Brent
Published: July 2010

Abstract. The taxocene of live epiphytal foraminifera was for one year monitored monthly on six phytal substrates in shallow water (<1 m) in two bays around Nevis, NE Caribbean Sea. Mosquito Bay was subject to a nutrient flux from a leaking septic tank. Long Haul Bay was comparatively undeveloped. SHE Community Structure Investigations (SHECSIs) revealed that the populations on five plants had logarithmic series distributions of species abundances, the slopes of lnS vs. lnE for these five time-series being within −1±0.3. In three time-series, they were within −1±0.05.Cluster analysis of twenty-five sediment samples in shallow water (<3 m) indicates that Nevis is largely surrounded by a single thanatacoenosis, for which SHECSI indicates a logarithmic series population structure. However, it is not possible to reconstruct perfectly the epiphytal population from the sediment thanatacoenosis. The thanatacoenosis included 40% allochthonous Amphistegina gibbosa, Archaias angulatus and Asterigerina carinata, washed in from offshore reefs, and few planorbulinids, although the latter dominates the biocoenosis on seagrass leaves in the backreef.
A larger agglutinated foraminifer originally described as a marine plant: the case of Arthrodendron Ulrich, 1904 (Foraminifera), its synonyms and homonyms
Authors: Kaminski Michael A. , Uchman Alfred , Neagu Theodor , Cetean Claudia G.
Published: July 2010

Abstract. The large, agglutinated foraminiferal genus Aschemocella Vialov, 1966 (type species Aschemonella carpathica Neagu, 1964) and the body fossil Halysium Świdziński, 1934 (type species Halysium problematicum Świdziński, 1934) are herein synonymized with the genus Arthrodendron Ulrich, 1904 (type species A. diffusum Ulrich, 1904), a form originally described as a marine alga from Upper Cretaceous (Maastrichtian) flysch sediments of the Kodiak Formation of the Yakutat Group (formerly Yakutat Formation) on Pogibshi Island, Alaska. The species Aschemonella carpathica Neagu is regarded as a subjective junior synonym of Arthrodendron diffusum Ulrich, which is herein lectotypified and transferred to the Foraminifera.
A new serial Cretaceous planktic foraminifer (Family Heterohelicidae Cushman, 1927) from the Upper Maastrichtian of the equatorial Central Pacific
Authors: Georgescu M. Dan , Abramovich Sigal
Published: July 2010

Abstract. A new serial planktic foraminifer, Lipsonia lipsonae nov. gen., nov. sp., is reported from the Upper Maastrichtian sediments of the equatorial Central Pacific (Shatsky Rise). It presents raised sutures throughout, ornamentation consisting of coarse irregular structures on the early part of the test and smooth test surface in the adult stage. The absence of costate ornamentation suggests that the new taxon origins should probably be found in the contemporaneous non-costate species of the Laeviheterohelix glabrans-L. dentata group. Lipsonia lipsonae presents morphological similarities with the Santonian genus Sigalia. The costate test surface and sutures of the latter indicates that it evolved from a costate species. Accordingly, Lipsonia and Sigalia are the results of iterative evolution from two different heterohelicid groups.
Pentaspongoreta, nomen novum for the genus Anachoreta O’Dogherty, 1994 (Radiolaria), non Gistel, 1848 (Hymenoptera)
Authors: O’dogherty Luis , De Wever Patrick
Published: July 2010

Abstract. In 1994, O’Dogherty (p. 137) erected the genus Anachoreta for a distinctive multicyrtid radiolarian having pentagonal post-abdominal segments in cross-section, a feature hitherto unknown among Cretaceous nassellarians. This monospecific taxon is a useful stratigraphical marker, ranging from the latest Albian to Middle–Late Cenomanian times. Recently, it was discovered that Gistel (1848) first gave the same name Anachoreta to an insect of the suborder Symphyta (Hymenoptera) as replacement name pro Lophyrus Latreille, 1802, previously preoccupied. Therefore, in accordance with the International Code of Zoological Nomenclature (1999) (Article 60), the name Pentaspongoreta is herein proposed as a replacement (type species Anachoreta sagitta O’Dogherty, 1994, p. 138, by original designation) for the preoccupied homonym Anachoreta O’Dogherty, 1994, non Gistel, 1848. Pentaspongoreta is named for its pentahedrical-shaped test and spongy meshwork; feminine gender.
The earliest leperditicope arthropod: a new genus from the Ordovician of Spitsbergen
Authors: Williams Mark , Siveter David J.
Published: July 2010

Abstract. A new leperditicope from the carbonate-dominated sequence of the Nordporten Member of the Kirtonryggen Formation, Spitsbergen, is the oldest confirmed representative of this group of bivalved arthropods. It occurs at a stratigraphical level low in the Floian Stage of the Early Ordovician, and below rocks bearing graptolites of the Pendeograptus fructicosus Biozone. Its occurrence emphasizes an ‘out of Laurentia’ palaeogeographical origin for leperditicopes, though there are no obvious antecedents in the earlier, Cambrian record of that palaeocontinent.
The 2008 recipient of the Brady Medal: Professor Katharina von Salis
Authors: Schmidt Daniela N. , Young Jeremy R. , Van Heck Shirley , Lees Jackie
Published: July 2010

Abstract. INTRODUCTIONThe Brady Medal, the highest award of The Micropalaeontological Society, is given to scientists who have had a major influence on micropalaeontology by means of a substantial body of excellent research and additionally service to the scientific community. It is named in honour of the brothers George and Henry Brady, pioneers of foraminiferal and ostracod research, respectively, both of whose work included landmark studies of material from the Challenger expedition. If the Challenger revolutionized nineteenth century oceanography, then the Glomar Challenger and the Deep Sea Drilling Project (DSDP) did the same for twentieth century micropalaeontology and palaeoceanography. So, it is fitting that the second Brady medal should go to one of the great contributors to DSDP microfossil studies, Katharina von Salis Perch-Nielsen.To use the words of her mother, Katharina is ‘curious, logical, inventive and rebellious, with an extreme sense for justice’. As a researcher, she made outstanding contributions to nannofossil taxonomy, biostratigraphy and palaeobiology. She both carried out an immense body of primary research and synthesized her encyclopaedic knowledge of nannofossils in a series of seminal syntheses, which have provided the basis for subsequent research. Moreover, she played a unique role in encouraging, supporting and facilitating micropalaeontological research and researchers.EARLY STUDIESKatharina was born in 1940 in Zurich, and was brought up there and in Soglio in Graubünden, a high-Alpine municipality in southeastern Switzerland, and commune of origin of the distinguished von Salis family. Her own branch of the family was characterized by strong women – her grandmother . . .
The lectotype of Spiroplecta rosula Ehrenberg, 1854 – the type species of Bolivinopsis Yakovlev, 1891 (Foraminifera)
Authors: Kaminski M. A. , Lazarus D. B.
Published: July 2010

Abstract. INTRODUCTIONThe Ehrenberg collection of microfossils in the Natural History Museum, Berlin contains the original reference material for a single genus of agglutinated foraminifera – Bolivinopsis Yakovlev, 1891. Among the foraminiferal specimens preserved in the collection, a single specimen was selected and illustrated by Ehrenberg (1854) as Spiroplecta rosula. This species was subsequently designated by Kisselman (1964) as the senior synonym of Bolivinopsis capitata Yakovlev, 1891, making it the type species of Bolivinopsis by virtue of synonymy. According to Kisselman (1964), the type specimens of B. capitata were deposited in the Central Geological Museum in St Petersburg, and were lost during the war. Indeed, the name B. capitata is not used in the Soviet literature, and such forms are consistently attributed to B. rosula. As part of the work undertaken for a Catalogue of Agglutinated Foraminiferal Genera, we undertook a search of the Ehrenberg Collection in order to establish the status of the type specimen(s) of Spiroplecta rosula.MATERIAL AND METHODSThe Ehrenberg collection of microfossils at the Museum für Naturkunde in Berlin consists of innumerable specimens embedded in Canada Balsam mounted on small mica disks that served as microscope slides. Small paper rings pressed onto the surface of the disks were used by Ehrenberg to mark specimens of importance, such as illustrated in Ehrenberg’s (1854) book Mikrogeologie. A catalogue of the collection was compiled originally by Ehrenberg’s daughter Clara and has been supplemented by new collection databases. We used these sources to locate and examine all the micas from the . . .
Recent and Late Quaternary dinoflagellate cysts from the area of the Greenland –Iceland –Faeroe –Scotland Ridge
Authors: Harland Rex
Published: July 2010

Abstract. Dinoflagellate cyst assemblages are described from Recent and Late Quaternary sediments recovered from Vema cores taken in the area of the Greenland – Iceland – Faeroe – Scotland Ridge. The dinoflagellate assemblage interpreted as indicating the Flandrian, “climatic” amelioration occurred in the sediments on the northern flank of the ridge whereas no evidence was found for this amelioration in the cores to the south. In the southern area, cyst assemblages proved an older climatic amelioration possibly of Eemian age. The potential for using dinoflagellate cysts to correlate oceanic and continental shelf areas is stressed.
A technique for laboratory sub-sampling of non marine fossil Ostracoda
Authors: Danielopol Dan L. , Casale Livia
Published: July 2010

Abstract. A two-stage sampling method for large samples of selected species of ostracods is described. The washed sample is sieved through several sieves to ensure the retention and partial separation of the adults and the last instar stages. Each fraction is then sub-sampled in a micropalaeontological sorting tray. The statistical treatment for the estimation of the total number of valves of the selected species is described. Comparative data using the Askö-splitter are also presented. The advantages of the two-stage sampling method in the tray are emphasised.
A technique for viewing the same nannofossil specimen in light microscope and scanning electron microscope using standard preparation materials
Authors: Gallagher Liam T.
Published: July 2010

Abstract. A new technique for viewing the same nannofossil specimen under the light microscope and scanning electron microscope is described, in which standard preparation materials are used. The applications of this, and previous techniques, are discussed as well as the relevance of these to the elucidation of taxonomic problems.
Septa, septal traces and septal filaments in the foraminiferal genus Nummulites Lamarck
Authors: Adams C. Geoffrey
Published: July 2010

Abstract. Several critical morphological features for the discrimination of Nummulites species are discussed and redefined, and three orders of septal filament are distinguished. A change in mode of growth, following the loss of the marginal cord in the adult stages of some species, is described.
A review and revision of the Jurassic-Early Cretaceous Globigerinina, with especial reference to the Aptian assemblages of Speeton (North Yorkshire, England)
Authors: Banner F. T. , Desai Damini
Published: July 2010

Abstract. The classification of the Jurassic to Albian Globigerinina is revised, phyletically and taxonomically. The Favusellacea comprise the genera Globuligerina (Jurassic) and Conoglobigerina (Jurassic-earliest Cretaceous), its descendant Favusella (Hauterivian to Cenomanian) and Ascoliella nov. (type species A. scotiensis nov.) (Aptian-Albian). The Globigerinacea include the families Praehedbergellidae nov. (from which the Hedbergellidae and its allies are descended) and the Schackoinidae; both are microperforate and nonmuricate. The Praehedbergellidae originate with Gorbachikella nov. (type species G. kugleri (Bolli)) and include Praehedbergella (Hauterivian-Aptian, including P. tatianae nov., P. grigelisae nov.), Wondersella, Blefuscuiana nov. (including B. kuznetsovae nov., B. mitra nov., B. multicamerata nov., B. speetonensis nov., B. globigerinelloides (Subbotina) lobulata nov. and B. occulta (Longoria) quinquecamerata nov.) (Barremian to Danian) and Lilliputianella nov. (including L. longorii nov.) (Aptian). The Schackoinidae includes Blowiella, Leupoldina and Schackoina. All the genera have their diagnoses emended as they are reinterpreted in accordance with the revised phyletic classification. Suggestions are made to explain the adaptive evolution of the taxa to the developing Early Cretaceous ocean.
The Heron-Allen & Earland Type Slide Collection of Foraminifera in the British Museum (Natural History)
Authors: Hodgkinson R. L.
Published: July 2010

Abstract. Heron-Allen & Earland collaborated on the study of the Foraminifera over a period of 25 years. During this partnership they amassed a large faunal reference collection (The Type Slide Collection) which was presented to the British Museum (Natural History) between 1926 and 1943. An introductory biography of Edward Heron-Allen and Arthur Earland shows that they came from very different backgrounds and had very different capabilities, but were united by a mutual interest in foraminifera; their dedication made them the foremost British foraminiferologists of the time. The appearance and content of the collection are described with background information on how these slides were prepared. Heron-Allen & Earland’s own method of curation, using a series of detailed indices (Keys), is also explained. The history of the Type Slide Collection, including its transfer from Selsey to the Museum to save it from destruction, is recounted and its importance, as a national collection, assessed.