DOI: 10.5061/dryad.ffbg79cz6
title: Supplements for: Review and revision of the Olivoidea (Neogastropoda) from the Paleocene and Eocene of the U.S. Gulf Coastal Plain

description: Numerous species of “oliviform” gastropods have been recognized in the
 Paleogene of the U.S. Gulf Coastal Plain, many of which have previously
 been allied to the “Bullia group” in the family Nassariidae, and placed in
 a variety of poorly-defined genera. We review these species, revise their
 generic and familial placement, and present a phylogenetic analysis. Of 19
 species considered valid, all are assigned to Olivoidea, six to Olividae
 -- one to Oliva, five to Agaronia -- and the rest to Ancillariidae. The
 highly variable species Ancillaria altile Conrad, 1832 is referred in the
 genus Ancillopsis and appears to have evolved anagenetically over an
 interval of more than 15 million years. Ancillaria tenera Conrad, 1834a
 and Ancillaria scamba Conrad, 1832 are placed in the new genus Palmoliva.
 Monoptygma Lea, 1833 is demonstrated to belong to Ancillariidae, and to
 contain only a single species. Some specimens assigned to Lisbonia expansa
 Palmer, 1937 are split into adults assigned to Ancillopsis altilis and
 juveniles (together with several other species) in Anbullina elliptica
 (Whitfield, 1865). Coastal Plain ancillariids may have evolved from one or
 more species of the Cretaceous-Paleocene genus Eoancilla. We agree with
 previous authors who have suggested that the late Eocene species Oliva
 mississippiensis Conrad, 1848 is the earliest known representative of this
 genus and the subfamily Oliviinae, perhaps derived from a species of
 Agaronia. The oldest Agaronia is Lower Eocene (Ypresian).
description: These data were generated to investigate the evolutionary
 relationships of olivoid gastropods living in the Paleocene and Eocene of
 the U.S. Gulf Coastal Plain. Nineteen species, representing three genera
 of Olividae and seven of Ancillaridae, were included along with Recent
 species Agaronia testacea (Lamarck, 1811) and Oliva sericea (Roding,
 1798). Calipers were used to measure and code these specimens for 27
 discrete characters: 10 binary, and 17 multistate. Character suites were
 coded to capture variation among (1) suture; (2) callus; (3) bands
 (including the olivoid, anterior, subsutural, and body whorl bands); (4)
 columella and plications; (5) ornamentation and texture; and (6) shell
 shape. Eoancilla was designated as the outgroup because the genus is a
 putative ancestor of the other ancillariids. Specimen measurements were
 made with calipers (measurements tallied in Supplement 2) and these coded
 character states were run in parsimony phylognetic analysis (detailed in
 Supplement 2). A parsimony analysis was conducted in PAUP* v. 4.0a147
 (Swofford, 2003) using a heuristic search with 10,000 random addition
 sequences. TBR (tree bisection reconnection) was used for the
 branch-swapping algorithm with no reconnection limit, and collapsing all
 branches with a maximum branch length of zero. All characters were left
 unordered and equally weighted. Nexus files utilized are provided as
 Supplement 1. Values for the consistency index (CI) and retention index
 (RI) were recorded for the recovered trees, and bootstrap values and
 Bremer support were calculated using PAUP*. 
description: Supplement 1: Word file containing character matrix and Nexus
 files created with PAUP v. 4.0a147; can be opened with Microsoft Word or
 Google Docs. PAUP*, a free program, can be used to run the character
 matrix under similar phylogenetic analyses. The code and parameters of the
 phylogenetic analysis are included in the Word file, alongside the
 character matrix that was used. Supplement 2:
 Spreadsheet of measurements can be opened using Excel or Google
 Sheets.
description: # Supplements for: Review and revision of the Olivoidea (Neogastropoda)
 from the Paleocene and Eocene of the U.S. Gulf Coastal Plain
 GENERAL INFORMATION 1\.
 Title of Dataset: Supplements for: Review and revision of the Olivoidea
 (Neogastropoda) from the Paleocene and Eocene of the U.S. Gulf Coast
 Plain. 2\. Author Information Corresponding Investigator Name: Dr. Warren
 Allmon Institution: Paleontological Research Institution, Ithaca, New
 York; Cornell University, Ithaca, New York Email: wda1@cornell.edu
 Co-investigator 1 Name: Dr. Dana Friend Institution: Paleontological
 Research Institution, Ithaca, New York 3\. Date of data collection:
 2019-2021 4\. Geographic location of data collection: U.S. Gulf Coastal
 Plain 5\. Funding sources that supported the collection of the data:
 National Science Foundation 6\. Recommended citation for this dataset:
 Allmon, W.D. & Friend, D.S. (2022), Supplements from: Review and
 revision of the Olivoidea (Neogastropoda) from the Paleocene and Eocene of
 the U.S. Gulf Coastal Plain, Dryad, Dataset DATA & FILE OVERVIEW 1\.
 Description of dataset These data were generated to investigate the
 evolutionary relationships of olivoid gastropods living in the Paleocene
 and Eocene of the U.S. Gulf Coastal Plain. Nineteen species, representing
 three genera of Olividae and seven of Ancillaridae, were included along
 with Recent species Agaronia testacea (Lamarck, 1811) and Oliva sericea
 (Roding, 1798). Calipers were used to measure and code these specimens for
 27 discrete characters: 10 binary, and 17 multistate. Character suites
 were coded to capture variation among (1) suture; (2) callus; (3) bands
 (including the olivoid, anterior, subsutural, and body whorl bands); (4)
 columella and plications; (5) ornamentation and texture; and (6) shell
 shape. Eoancilla was designated as the outgroup because the genus is a
 putative ancestor of the other ancillariids. 2\. File List: File 1 Name:
 Supplement 1.docx File 1 Description: Nexus files used in phylogenetic
 analysis File 2 Name: Supplement 2 morphometric data.xlsx File 2
 Description: Caliper measurements of specimens METHODOLOGICAL INFORMATION
 Our preliminary phylogenetic analysis included nineteen Paleocene-Eocene
 species representing three genera of Olividae and seven genera of
 Ancillariidae. We also included the Recent species Agaronia testacea
 (Lamarck, 1811) and Oliva sericea (Röding, 1798) for comparison. We used
 type and figured material to code each species for the following discrete
 character suites: (1) suture; (2) callus; (3) bands (including the
 olivoid, anterior, subsutural, and body whorl bands); (4) columella and
 plications; (5) ornamentation and texture; and (6) shell shape. In
 instances where museum specimens were unavailable, taxa were coded using
 primary taxonomic figures and literature. Species were coded for 27
 discrete characters, 10 binary, and 17 multistate (Table 2), that were
 selected to capture morphological variation among the clades and are
 inferred to represent homologous structures among sampled taxa. Eoancilla
 was designated as the outgroup because the genus is a putative ancestor of
 the other ancillariids (Garvie, 2013). A parsimony analysis was conducted
 in PAUP* v. 4.0a147 (Swofford, 2003) using a heuristic search with 10,000
 random addition sequences. TBR (tree bisection reconnection) was used for
 the branch-swapping algorithm with no reconnection limit, and collapsing
 all branches with a maximum branch length of zero. All characters were
 left unordered and equally weighted. Nexus files utilized are provided as
 Supplement 1. Values for the consistency index (CI) and retention index
 (RI) were recorded for the recovered trees, and bootstrap values and
 Bremer support were calculated using PAUP*. DATA-SPECIFIC INFORMATION FOR:
 Supplement 1.docx 1\. Dimensions of data matrix for phylogenetic analysis:
 \# taxa: 21 \# characters: 27 Character codes: 01234 missing: ? 2\.
 Details of Phylogenetic analysis: Weighting: all characters have equal
 weight Ordering: all characters are unordered Analysis type: Parsimony
 Program: PAUP* v. 4.0a147 Search Parameters: heuristic search with 10,000
 random addition sequences. Tree bisection reconnection used for the
 branch-swapping algorithm with no connection limit -All branches collapsed
 with a branch length of zero. DATA-SPECIFIC INFORMATION FOR: Supplement 2
 morphometric data.xlsx 1\. Number of variables: 12 2\. Number of rows: 230
 3\. Variable List: Location: Locality where specimen was collected Case #:
 Number of shell out of total analyzed in study Var1: Measurement (1) as
 indicated on text-fig 11, "Maximum height" Var2: Measurement (2)
 as indicated on text-fig 11, "Maximum width in apertural view"
 Var3: Measurement (3) as indicated on text-fig 11, "Width at
 posterior end of aperture" Var4: Measurement (4) as indicated on
 text-fig 11, "Aperture length" Var5: Measurement (5) as
 indicated on text-fig 11, "Height from posterior-most point of
 parietal callus" Var6: Measurement (6) as indicated on text-fig 11,
 "Maximum height minus aperture length" Var7: Measurement (7) as
 indicated on text-fig 11, "Maximum width of callus on ventral
 side" Var8: Measurement (8) as indicated on text-fig 11,
 "Maximum width of aperture" Var9: Measurement (9) as indicated
 on text-fig 11, "Width of anterior canal" Var10: Measurement
 (10) as indicated on text-fig 11, "Maximum width from left side"
 4\. Missing data codes: \***: Unknown/ not available to be measured for
 specified shell. 5\. Other relevant information: Measurements taken on
 specimens using electronic calipers.