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 9, of the 10 units into which the Lopez de Bertodano FM was divided, and it falls below the K-T boundary, though it is ill-defined. This collection is only for Unit 9 taxa collected BELOW the "K/T transition interval", and so is clearly Maastrichtian in age.
• bed-level stratigraphic resolution
Environment/lithology: offshore; poorly lithified, bioturbated, glauconitic, silty sandstone and siltstone
Size class: macrofossils
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 63513: authorized by Linda Ivany, entered by Linda Ivany on 15.08.2006, edited by Philip Mannion
Creative Commons license: CC BY (attribution)
Taxonomic list
unclassified | |
Reptilia | |
Reptilia indet. Laurenti 1768 reptile | |
Elasmosauridae indet.3 Cope 1869 elasmosaur IAA Pv 443, an incomplete skeleton comprising the mandibular symphysis and part of right and left mandibular rami, cervical and dorsal centra, an incomplete humerus, radius, ulna, ulnare, intermedium, radiale and distal carpal 1, 2 þ 3 and 4, other fragmentary postcranial bones and associated gastroliths
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Sedentaria | |
Bivalvia | |
Leionucula suboblonga Wilckens 1907 nut clam | |
Australoneilo gracilis Wilckens 1907 clam | |
Cucullaea antarctica Wilckens 1907 clam | |
Entolium sadleri scallop
Entolium seymouriensis scallop | |
Acesta shackletoni file clam
Seymourtula antarctica Wilckens 1910 file clam | |
Pycnodonte seymouriensis, "Pycnodonte vesiculosa" = Pycnodonte (Phygraea) vesicularis vesiculosa
Pycnodonte seymouriensis oyster
"Pycnodonte vesiculosa" = Pycnodonte (Phygraea) vesicularis vesiculosa Sowerby 1822 oyster listed as "Pynodonte", bivalve - typo
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Pinna freneizae oyster | |
Pulvinites antarctica oyster | |
Phelopteria feldmanni pearl oyster | |
"Oistotrigonia regina" = Linotrigonia (Oistotrigonia)
"Oistotrigonia regina" = Linotrigonia (Oistotrigonia) clam | |
Panopea clausa Wilckens 1910 clam | |
Goniomya hyriiformis clam | |
Cyclorisma chaneyi venus clam | |
Lahillia larseni Sharman and Newton 1897 clam | |
Lucina scotti clam | |
Scaphopoda | |
Dentalium sp. Linnaeus 1758 tusk shell | |
Gastropoda | |
Acmaea sp. Eschscholtz 1830 limpet | |
Eunaticina arctowskiana moon snail | |
"Heterotrema sp." = Heteroterma
"Heterotrema sp." = Heteroterma Gabb 1869 snail | |
Perissoptera sp. Tate 1865 snail | |
"Cassidaria mirablis" = Galeodea
"Cassidaria mirablis" = Galeodea snail | |
Amberleya spinigera snail | |
Cephalopoda | |
Diplomoceras sp. Hyatt 1900 ammonite | |
Pseudophyllites loryi Kilian and Reboul 1909 ammonite | |
Pachydiscus ultimus Macellari 1986 ammonite
Pachydiscus riccardi Macellari 1986 ammonite | |
Maorites densicostatus Kilian and Reboul 1909 ammonite | |
Malacostraca | |
Hoploparia stokesi Weller 1903 clawed lobster
Metanephrops jenkinsi Feldmann 1989 clawed lobster |