Sobral FM., Seymour Island (Paleocene of Antarctica)

Where: Seymour Island, Antarctica (64.3° S, 56.8° W: paleocoordinates 63.5° S, 66.2° W)

• small collection-level geographic resolution

When: Sobral Formation, Paleocene (66.0 - 56.0 Ma)

• Sobral Fm. falls avove the Lopez de Bertodano Fm, which contains the K/T boundary near its top.

• bed-level stratigraphic resolution

Environment/lithology: offshore; poorly lithified, bioturbated, glauconitic, silty sandstone and siltstone

• siltstones, silty concretionary sandstones, glauconitic sandstones, some volcanoclastic component

Collection methods: bulk,

• All macrofossils were collected

Primary reference: W. J. Zinsmeister, R. M. Feldmann, M. O. Woodburne and D. H. Elliot. 1989. Latest Cretaceous/Earliest Tertiary Transition on Seymour Island, Antarctica. Journal of Paleontology 63(6):731-738 [L. Ivany/E. Kowalski/J. Alroy]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 63516: authorized by Linda Ivany, entered by Linda Ivany on 15.08.2006

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Crinoidea
 Isocrinida - Isselicrinidae
Isselicrinus antarcticus
Gastropoda
 Cerithioidea - Turritellidae
Mesalia sp.
Mesalia sp. Gray 1847 turret shell
 Sorbeoconcha - Naticidae
Eunaticina arctowskiana
 Sorbeoconcha - Cassidae
Cassis sp.
Cassis sp. Scopoli 1777 snail
 Neogastropoda - Fasciolariidae
Paleopsephaea sp.
Paleopsephaea sp. Wade 1926 snail
 Neogastropoda - Conidae
Marshallaria sp.
Marshallaria sp. Finlay and Marwick 1937 cone shell
 Sorbeoconcha - Aporrhaidae
"Perissoptera nordenskjoldi" = Struthiochenopus nordenskjoldi
"Perissoptera nordenskjoldi" = Struthiochenopus nordenskjoldi Wilckens 1910 snail
 Pleurotomarioidea - Pleurotomariidae
Pleurotomaria larseniana
Bivalvia
 Nuculanida - Malletiidae
Australoneilo sp., Australoneilo casei
Australoneilo sp. Zinsmeister 1984 clam
Australoneilo casei Zinsmeister and Macellari 1988 clam
 Nuculida - Nuculidae
Leionucula sp., Leionucula suboblonga, Leionucula hunickeni
Leionucula sp. Quenstedt 1930 nut clam
Leionucula suboblonga Wilckens 1907 nut clam
Leionucula hunickeni Zinsmeister and Macellari 1988 nut clam
 Thraciida - Periplomatidae
Periploma sp.
Periploma sp. Schumacher 1816 clam
 Cardiida - Veneridae
Marwickia woodburnei
Marwickia woodburnei Zinsmeister and Macellari 1988 venus clam
 Cardiida - Lahillidae
Lahillia huberi, Lahillia larseni
Lahillia huberi Zinsmeister and Macellari 1988 clam
Lahillia larseni Sharman and Newton 1897 clam
 Lucinida - Lucinidae
Lucina sp.
Lucina sp. Bruguière 1797 clam
 Pectinida - Limidae
Acesta shackletoni, Acesta webbi
Acesta webbi Zinsmeister and Macellari 1988 file clam
 Ostreida - Pinnidae
Pinna sp., Pinna freneizae
Pinna sp. Linnaeus 1758 oyster
 Ostreida - Ostreidae
Ostrea sp.
Ostrea sp. Linnaeus 1758 oyster
 Arcida - Cucullaeidae
Cucullaea ellioti
Cucullaea ellioti Zinsmeister and Macellari 1988 clam
Malacostraca
 Decapoda - Nephropidae
Metanephrops jenkinsi, Hoploparia stokesi
Metanephrops jenkinsi Feldmann 1989 clawed lobster
Hoploparia stokesi Weller 1903 clawed lobster