page_title: Aptian
section_title: †Ornithopods
hierarchical_section_title: Aptian / Palaeontology / †Ornithopods
caption_attribution_description: Dollodon bampingi restoration based on IRSNB 1551; more recent studies classify this specimen as Mantallisaurus. • Based proportionally on a skeletal reconstruction by Gregroy Paul (2008). • In the past this specimen (IRSNB 1551) has been placed in the genus Iguanodon, often refered to the as 'gracile Iguanodon'. In 2008 this particular specimen was reasigned to a new genus, Dollodon. &#91;1&#93; Later studies have cast doubt on the validy of Dollodon. &#91;2&#93; &#91;3&#93; &#91;4&#93;&#91;5&#93; • Derived Iguanodonts, known as Hadrosaurids, show small polygonal scales in the skin. &#91;6&#93; • The colours and/or patterns, as with nearly all reconstructions of prehistoric creatures, are speculative. Note: I often update my images; If you want to post this image on other websites, if possible, please link to the original file here. This will allow others to see the most recent version. Thanks. References ↑ Paul, Gregory S.&#32;(2008).&#32;"A revised taxonomy of the iguanodont dinosaur genera and species". Cretaceous Research&#32;29&#32;(2): 192–216. DOI:10.1016/j.cretres.2007.04.009. ↑ &#32;(2010).&#32;"Early and "Middle" Cretaceous Iguanodonts in Time and Space". Journal of Iberian Geology&#32;36&#32;(2): 145–164. DOI:10.5209/rev_JIGE.2010.v36.n2.3.[dead link] ↑ Norman, David.&#32;(2010).&#32;"A taxonomy of iguanodontian (Dinosauria: Ornithopoda) from the lower Wealden Group (Cretaceous: Valanginian) of southern England". Zootaxa&#32;2489: 47–66. ↑ McDonald, Andrew T.&#32;(2012).&#32;"The status of Dollodon and other basal iguanodonts (Dinosauria: Ornithischia) from the upper Wealden beds (Lower Cretaceous) of Europe". Cretaceous Research&#32;33: 1–6. DOI:10.1016/j.cretres.2011.03.002. ↑ Norman, D.B., 2012, "Iguanodontian Taxa (Dinosauria: Ornithischia) from the Lower Cretaceous of England and Belgium". In: Pascal Godefroit (ed.), Bernissart Dinosaurs and Early Cretaceous Terrestrial Ecosystems. Indiana University Press. 464 pp. http://www.iupress.indiana.edu/product_info.php?products_id=800408 ↑ Anderson, Brian G.; Barrick, Reese E.; Droser, Mary L.; Stadtman, Kennith L. (1999) "HADROSAUR SKIN IMPRESSIONS FROM THE UPPER CRETACEOUS NESLEN FORMATION, BOOK CLIFFS, UTAH: MORPHOLOGY AND PALEOENVIRONMENTAL CONTEXT" in Vertebrate Paleontology in Utah, Category:New York&#58; &#32;Utah Geological Survey, pp.&#160;295&#8211;302 ISBN&#58; 1557916349, 9781557916341.&#32;
context_page_description: The Aptian is an age in the geologic timescale or a stage in the stratigraphic column. It is a subdivision of the Early or Lower Cretaceous epoch or series and encompasses the time from 125.0 ± 1.0 Ma to 113.0 ± 1.0 Ma, approximately. The Aptian succeeds the Barremian and precedes the Albian, all part of the Lower/Early Cretaceous.
  The Aptian partly overlaps the upper part of the regionally used stage Urgonian.
  The Selli Event, also known as OAE1a, was one of two oceanic Anoxic events in the Cretaceous period, which occurred around 120 Ma and lasted approximately 1 to 1.3 million years. The Aptian extinction was a minor extinction event hypothesized to have occurred around 116 to 117 Ma.
caption: Dollodon
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