Polarornis type-locality (Cretaceous of Antarctica)

Also known as Seymour Island

Where: Antarctica (64.3° S, 56.8° W: paleocoordinates 62.5° S, 67.5° W)

• coordinate estimated from map

When: Sandwich Bluff Member (López de Bertodano Formation), Maastrichtian (72.1 - 66.0 Ma)

• The loon material was found in the upper part (Unit 9) of the loosely consolidated 1200-m-thick Lopez de Bertodano Formation (Fig. 1B).

• member-level stratigraphic resolution

Environment/lithology: marine; poorly lithified, nodular, calcareous sandstone

Size class: macrofossils

Collected by Bryan Small, Sankar Chatterjee in 31st December 1983

Primary reference: S. Chatterjee. 2002. The morphology and systematics of Polarornis, a Cretaceous Loon (Aves: Gaviidae) from Antarctica. In Z.-H. Zhou, F.-C. Zhang (eds.), Proceedings of the 5th Symposium of the Society of Avian Paleontology and Evolution 125-155 [G. Lloyd/G. Lloyd]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 131860: authorized by Graeme Lloyd, entered by Graeme Lloyd on 31.07.2012

Creative Commons license: CC BY (attribution)

Taxonomic list

• Other taxa known from the site include: annelids, bivalves, gastropods, ammonites, mosasaurs, sharks, teleosts and plesiosaurs.
Aves
 Anseriformes - Vegaviidae
Polarornis gregorii n. gen. n. sp.
Polarornis gregorii n. gen. n. sp. Chatterjee 2002 waterfowl
TTU P 9265