Late Cretaceous non-avian dinosaurs from the James Ross Basin, Antarctica: description of new material, updated synthesis, biostratigraphy, and paleobiogeography
Although the fossil record of non-avian dinosaurs from the Cretaceous of Antarctica is the poorest of any continent, fossils representing at least five major taxonomic groups (Ankylosauria, early-diverging Ornithopoda, Hadrosauridae, Titanosauria, and Theropoda) have been recovered. All come from Up...
Main Authors: | , , , , , , , , , |
---|---|
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Polar Research Institute of China - PRIC
2019
|
Subjects: | |
Online Access: | http://library.arcticportal.org/2695/ http://library.arcticportal.org/2695/1/A1903005.pdf |
id |
ftarcticportal:oai:generic.eprints.org:2695 |
---|---|
record_format |
openpolar |
spelling |
ftarcticportal:oai:generic.eprints.org:2695 2023-12-10T09:39:04+01:00 Late Cretaceous non-avian dinosaurs from the James Ross Basin, Antarctica: description of new material, updated synthesis, biostratigraphy, and paleobiogeography Lamanna, Matthew C. Case, Judd A. Roberts, Eric M. Arbour, Victoria M. Ely, Ricardo C. Salisbury, Steven W. Clarke, Julia A. Malinzak, D. Edward West, Abagael R. O'Connor, Patrick M. 2019-09 application/pdf http://library.arcticportal.org/2695/ http://library.arcticportal.org/2695/1/A1903005.pdf en eng Polar Research Institute of China - PRIC http://library.arcticportal.org/2695/1/A1903005.pdf Lamanna, Matthew C. and Case, Judd A. and Roberts, Eric M. and Arbour, Victoria M. and Ely, Ricardo C. and Salisbury, Steven W. and Clarke, Julia A. and Malinzak, D. Edward and West, Abagael R. and O'Connor, Patrick M. (2019) Late Cretaceous non-avian dinosaurs from the James Ross Basin, Antarctica: description of new material, updated synthesis, biostratigraphy, and paleobiogeography. Advances in Polar Science, 30 (3). pp. 228-250. Fauna Terrestrial Article PeerReviewed 2019 ftarcticportal 2023-11-15T23:54:41Z Although the fossil record of non-avian dinosaurs from the Cretaceous of Antarctica is the poorest of any continent, fossils representing at least five major taxonomic groups (Ankylosauria, early-diverging Ornithopoda, Hadrosauridae, Titanosauria, and Theropoda) have been recovered. All come from Upper Cretaceous (Coniacian–Maastrichtian) marine and nearshore deposits belonging to the Gustav and Marambio groups of the James Ross Basin at the northern tip of the Antarctic Peninsula. The majority of these finds have come from the Campanian–Maastrichtian Snow Hill Island and López de Bertodano formations of James Ross and Vega islands. Given the rarity of Antarctic Cretaceous non-avian dinosaurs, discoveries of any fossils of these archosaurs, no matter how meager, are of significance. Here we describe fragmentary new ornithischian (ankylosaur and ornithopod) material from the upper Campanian–lower Maastrichtian Cape Lamb Member of the Snow Hill Island Formation and the Maastrichtian Sandwich Bluff Member of the López de Bertodano Formation. One of these specimens is considered to probably pertain to the holotypic individual of the early-diverging ornithopod Morrosaurus antarcticus. We also provide an up-to-date synthesis of the Late Cretaceous non-avian dinosaur record of the James Ross Basin and analyze the biostratigraphic occurrences of the various finds, demonstrating that most (including all named taxa and all reasonably complete skeletons discovered to date) occur within a relatively condensed temporal interval of the late Campanian to early Maastrichtian. Most or all James Ross Basin dinosaurs share close affinities with penecontemporaneous taxa from Patagonia, indicating that at least some continental vertebrates could disperse between southern South America and Antarctica during the final stages of the Mesozoic. Article in Journal/Newspaper Advances in Polar Science Antarc* Antarctic Antarctic Peninsula Antarctica antarcticus Polar Science Polar Science Snow Hill Island Arctic Portal Library Antarctic The Antarctic Antarctic Peninsula Patagonia Marambio ENVELOPE(-56.750,-56.750,-64.283,-64.283) Hill Island ENVELOPE(76.070,76.070,-69.395,-69.395) Snow Hill Island ENVELOPE(-57.183,-57.183,-64.466,-64.466) Cape Lamb ENVELOPE(-57.621,-57.621,-63.909,-63.909) Sandwich Bluff ENVELOPE(-57.569,-57.569,-63.832,-63.832) Snow Hill ENVELOPE(-57.183,-57.183,-64.466,-64.466) |
institution |
Open Polar |
collection |
Arctic Portal Library |
op_collection_id |
ftarcticportal |
language |
English |
topic |
Fauna Terrestrial |
spellingShingle |
Fauna Terrestrial Lamanna, Matthew C. Case, Judd A. Roberts, Eric M. Arbour, Victoria M. Ely, Ricardo C. Salisbury, Steven W. Clarke, Julia A. Malinzak, D. Edward West, Abagael R. O'Connor, Patrick M. Late Cretaceous non-avian dinosaurs from the James Ross Basin, Antarctica: description of new material, updated synthesis, biostratigraphy, and paleobiogeography |
topic_facet |
Fauna Terrestrial |
description |
Although the fossil record of non-avian dinosaurs from the Cretaceous of Antarctica is the poorest of any continent, fossils representing at least five major taxonomic groups (Ankylosauria, early-diverging Ornithopoda, Hadrosauridae, Titanosauria, and Theropoda) have been recovered. All come from Upper Cretaceous (Coniacian–Maastrichtian) marine and nearshore deposits belonging to the Gustav and Marambio groups of the James Ross Basin at the northern tip of the Antarctic Peninsula. The majority of these finds have come from the Campanian–Maastrichtian Snow Hill Island and López de Bertodano formations of James Ross and Vega islands. Given the rarity of Antarctic Cretaceous non-avian dinosaurs, discoveries of any fossils of these archosaurs, no matter how meager, are of significance. Here we describe fragmentary new ornithischian (ankylosaur and ornithopod) material from the upper Campanian–lower Maastrichtian Cape Lamb Member of the Snow Hill Island Formation and the Maastrichtian Sandwich Bluff Member of the López de Bertodano Formation. One of these specimens is considered to probably pertain to the holotypic individual of the early-diverging ornithopod Morrosaurus antarcticus. We also provide an up-to-date synthesis of the Late Cretaceous non-avian dinosaur record of the James Ross Basin and analyze the biostratigraphic occurrences of the various finds, demonstrating that most (including all named taxa and all reasonably complete skeletons discovered to date) occur within a relatively condensed temporal interval of the late Campanian to early Maastrichtian. Most or all James Ross Basin dinosaurs share close affinities with penecontemporaneous taxa from Patagonia, indicating that at least some continental vertebrates could disperse between southern South America and Antarctica during the final stages of the Mesozoic. |
format |
Article in Journal/Newspaper |
author |
Lamanna, Matthew C. Case, Judd A. Roberts, Eric M. Arbour, Victoria M. Ely, Ricardo C. Salisbury, Steven W. Clarke, Julia A. Malinzak, D. Edward West, Abagael R. O'Connor, Patrick M. |
author_facet |
Lamanna, Matthew C. Case, Judd A. Roberts, Eric M. Arbour, Victoria M. Ely, Ricardo C. Salisbury, Steven W. Clarke, Julia A. Malinzak, D. Edward West, Abagael R. O'Connor, Patrick M. |
author_sort |
Lamanna, Matthew C. |
title |
Late Cretaceous non-avian dinosaurs from the James Ross Basin, Antarctica: description of new material, updated synthesis, biostratigraphy, and paleobiogeography |
title_short |
Late Cretaceous non-avian dinosaurs from the James Ross Basin, Antarctica: description of new material, updated synthesis, biostratigraphy, and paleobiogeography |
title_full |
Late Cretaceous non-avian dinosaurs from the James Ross Basin, Antarctica: description of new material, updated synthesis, biostratigraphy, and paleobiogeography |
title_fullStr |
Late Cretaceous non-avian dinosaurs from the James Ross Basin, Antarctica: description of new material, updated synthesis, biostratigraphy, and paleobiogeography |
title_full_unstemmed |
Late Cretaceous non-avian dinosaurs from the James Ross Basin, Antarctica: description of new material, updated synthesis, biostratigraphy, and paleobiogeography |
title_sort |
late cretaceous non-avian dinosaurs from the james ross basin, antarctica: description of new material, updated synthesis, biostratigraphy, and paleobiogeography |
publisher |
Polar Research Institute of China - PRIC |
publishDate |
2019 |
url |
http://library.arcticportal.org/2695/ http://library.arcticportal.org/2695/1/A1903005.pdf |
long_lat |
ENVELOPE(-56.750,-56.750,-64.283,-64.283) ENVELOPE(76.070,76.070,-69.395,-69.395) ENVELOPE(-57.183,-57.183,-64.466,-64.466) ENVELOPE(-57.621,-57.621,-63.909,-63.909) ENVELOPE(-57.569,-57.569,-63.832,-63.832) ENVELOPE(-57.183,-57.183,-64.466,-64.466) |
geographic |
Antarctic The Antarctic Antarctic Peninsula Patagonia Marambio Hill Island Snow Hill Island Cape Lamb Sandwich Bluff Snow Hill |
geographic_facet |
Antarctic The Antarctic Antarctic Peninsula Patagonia Marambio Hill Island Snow Hill Island Cape Lamb Sandwich Bluff Snow Hill |
genre |
Advances in Polar Science Antarc* Antarctic Antarctic Peninsula Antarctica antarcticus Polar Science Polar Science Snow Hill Island |
genre_facet |
Advances in Polar Science Antarc* Antarctic Antarctic Peninsula Antarctica antarcticus Polar Science Polar Science Snow Hill Island |
op_relation |
http://library.arcticportal.org/2695/1/A1903005.pdf Lamanna, Matthew C. and Case, Judd A. and Roberts, Eric M. and Arbour, Victoria M. and Ely, Ricardo C. and Salisbury, Steven W. and Clarke, Julia A. and Malinzak, D. Edward and West, Abagael R. and O'Connor, Patrick M. (2019) Late Cretaceous non-avian dinosaurs from the James Ross Basin, Antarctica: description of new material, updated synthesis, biostratigraphy, and paleobiogeography. Advances in Polar Science, 30 (3). pp. 228-250. |
_version_ |
1784894688117915648 |