Unit 8, Lopez de Bertodano FM., Seymour Island (Cretaceous of Antarctica)

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

• small collection-level geographic resolution

When: Lopez de Bertodano Formation, Maastrichtian (72.1 - 66.0 Ma)

• This is restricted to Unit 8, of the 10 units into which the Lopez de Bertodano FM was divided.

• 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 63518: 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
unclassified
  -
Grossuvrites gemmatus, Vanikarpsis sp., Linuparis macellarii, Surbula nucleus, Oligopycha cf. concinnus, Columbaria sp., Eslaevitrigonia regina
Malacostraca
 Decapoda - Nephropidae
Hoploparia stokesi
Hoploparia stokesi Weller 1903 clawed lobster
Sedentaria
 Sabellida - Serpulidae
Rotularia zinsmeisteri
Gastropoda
  -
Gastropoda indet.
Gastropoda indet. Cuvier 1795 snail
 Seguenzioidea - Eucyclidae
Amberleya spinigera
 Cerithioidea - Cerithiidae
Cerithium sp.
Cerithium sp. Bruguière 1789 cerith snail
 Cerithioidea - Turritellidae
Mesalia sp.
Mesalia sp. Gray 1847 turret shell
 Neogastropoda - Fasciolariidae
Graphidula cf. culbertoni, Taioma charcotianus, Fusinus phillippiana
 Sorbeoconcha - Aporrhaidae
Perissoptera sp.
Perissoptera sp. Tate 1865 snail
 Sorbeoconcha - Cassidae
"Cassidaria mirabilis" = Galeodea
"Cassidaria mirabilis" = Galeodea snail
 Sorbeoconcha - Ranellidae
Trachytriton sp.
Trachytriton sp. Meek 1864 triton shell
Scaphopoda
 Dentaliida - Dentaliidae
Dentalium sp.
Dentalium sp. Linnaeus 1758 tusk shell
Cephalopoda
 Ammonitida - Pachydiscidae
Pachydiscus riccardi
Pachydiscus riccardi Macellari 1986 ammonite
 Ammonitida - Kossmaticeratidae
Maorites densicostatus
Maorites densicostatus Kilian and Reboul 1909 ammonite
Bivalvia
 Ostreida - Malleidae
Pulvinites antarctica
 Arcida - Cucullaeidae
Cucullaea sp., Cucullaea antarctica
Cucullaea sp. Lamarck 1801 clam
Cucullaea antarctica Wilckens 1907 clam
 Carditida - Astartidae
"Dozyia drygalskiana" = Eriphyla (Dozyia)
"Dozyia drygalskiana" = Eriphyla (Dozyia) clam
 Thraciida - Thraciidae
Thracia askinae
 Cardiida - Lahillidae
Lahillia larseni
Lahillia larseni Sharman and Newton 1897 clam
 Trigoniida - Trigoniidae
"Oistotrigonia pygscelium" = Linotrigonia (Oistotrigonia)
"Oistotrigonia pygscelium" = Linotrigonia (Oistotrigonia) clam
 Nuculida - Nuculidae
Leionucula suboblonga
Leionucula suboblonga Wilckens 1907 nut clam
Reptilia
  -
Reptilia indet.
Reptilia indet. Laurenti 1768 reptile