| Revision as of 15:32, 17 August 2013 editEvangelos Giakoumatos (talk | contribs)Extended confirmed users3,632 edits The end of the Cretaceous coincides with the deposition of an iridium-rich layer found worldwide which has been dated at 66.043 Ma.← Previous edit | Revision as of 11:46, 6 November 2013 edit undoHugo999 (talk | contribs)Autopatrolled, Extended confirmed users, Pending changes reviewers803,488 edits removed Category:Cretaceous paleontological sites; added Category:Cretaceous paleontological sites of Antarctica using HotCatNext edit → | ||
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Revision as of 11:46, 6 November 2013
| Lopez de Bertodano Formation | |
|---|---|
| Stratigraphic range: Maastrichtian 70 to 66 Ma | |
| Type | Geological formation |
| Unit of | Marambio Group |
| Overlies | Snow Hill Island Formation |
| Lithology | |
| Primary | siltstone, mudstone |
| Other | concretion, sandstone |
| Location | |
| Region | James Ross Island group, Antarctica |
The Lopez de Bertodano Formation is a geological formation in the James Ross archipelago of the Antarctic Peninsula. The strata date to the end of the Late Cretaceous (upper-lower Maastrichtian stage), about 70-66 million years ago. Dinosaur remains are among the fossils that have been recovered from the formation.
| Dinosaurs of the Lopez de Bertodano Formation | |||||
|---|---|---|---|---|---|
| Genus | Species | Unit | Material | Notes | Images |
|
P. gregorii |
Lower Sandwich Bluff Member |
Partial skull and skeleton, holotype |
A loon |
||
|
P.? sp. |
Lower Sandwich Bluff Member |
Partial skeleton including wing and hindlimbs |
Possibly a more primitive form with strong flight ability and lighter bones | ||
|
V. iaai |
Lower Sandwich Bluff Member |
Partial skeleton, holotype |
An anseriform | ||
|
Undescribed Cariamae |
Unnamed species |
Cape Lamb Member |
Isolated femur |
Close relative of cariamids and phorusrhacids | |
|
Undescribed charadriiform |
Unnamed species |
Cape Lamb Member |
Partial skeleton |
||
|
Undescribed euornithopod |
Unnamed species |
||||
|
Undescribed hadrosaurid |
Unnamed species |
Isolated tooth |
|||
|
Undescribed theropod |
Unnamed species |
Fragments |
|||
See also
References
- ^ Olivero, E.B., Ponce, J.J., Marsicano, C.A. and Martinioni, D.R. (2007). "Depositional settings of the basal Lopez de Bertodano Formation, Maastrichtian, Antarctica." Revista de la Asociación Geológica Argentina, 62(4): 521-529.
- ^ Weishampel, David B; et al. (2004). "Dinosaur distribution (Late Cretaceous, Antarctica)." In: Weishampel, David B.; Dodson, Peter; and Osmólska, Halszka (eds.): The Dinosauria, 2nd, Berkeley: University of California Press. p. 606. ISBN 0-520-24209-2.
- Clarke, J.A., Tambussi, C.P., Noriega, J.I., Erickson, G.M. and Ketcham, R.A. (2005). "Definitive fossil evidence for the extant avian radiation in the Cretaceous." Nature, 433: 305-308. DOI:10.1038/nature03150 PDF fulltext Supporting information
- Case, J., Reguero, M., Martin, J. and Cordes-Person, A. (2006). "A cursorial bird from the Maastrictian of Antarctica." Journal of Vertebrate Paleontology, 26(3): 48A.
- Cordes, (2002). "A new charadriiform avian specimen from the Early Maastrichtian of Cape Lamb, Vega Island, Antarctic Peninsula". Journal of Vertebrate Paleontology, 22(3): 46A.
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