Where: Antarctica (64.2° S, 57.8° W: paleocoordinates 62.0° S, 68.5° W)
• coordinate stated in text
• local area-level geographic resolution
When: Rabot Member (Santa Marta Formation), Late/Upper Campanian (83.5 - 70.6 Ma)
• STRATIGRAPHIC RELATIONS: From the Rabot Mbr of the Santa Marta Fm, which is locally overlain by the López de Bertodano Fm (Campanian-Maastrichtian). The Rabot Mbr of Crame et al. (1991) is raised to formation rank by Marenssi et al. (1992), but the former lithostratigraphic nomenclature is used by the enterer AGE: Late Campanian, on the basis of ammonite biostratigraphy. STRATIGRAPHIC POSITION: From middle "member 2" of the Rabot Member.
• group of beds-level stratigraphic resolution
Environment/lithology: offshore; lithified siltstone
Size class: macrofossils
Preservation: cast, mold/impression
Collection methods: COLLECTOR: Multiple collectors, including the authors. REPOSITORY: Not stated, but presumably the Centro de Investigaciones en Recurso Geologicos (CIRGEO)..
Primary reference: S. A. Marenssi, J. M. Lirio, S. N. Santillana, D. R. Martinioni, and S. Palamarczuk. 1992. El Cretacio Superior del sudeste de la Isla James Ross, Antartida. Geologia de la Isla James Ross 77-88 [A. Hendy/A. Hendy]more details
Purpose of describing collection: biostratigraphic analysis
PaleoDB collection 83390: authorized by Austin Hendy, entered by Austin Hendy on 19.08.2008
Creative Commons license: CC BY (attribution)
Taxonomic list
Bivalvia | |
Inoceramus sp. Sowerby 1814 clam | |
Cephalopoda | |
Neophylloceras sp. Shimizu 1934 ammonite | |
? Maorites sp. Marshall 1926 ammonite
Neograhamites morenoi ammonite | |
Menuites sp. Spath 1922 ammonite
Anapachydiscus cf. fascicostatus Yabe 1921 ammonite
Pachydiscus sp. Zittel 1884 ammonite | |
Hoplitoplacenticeras sp., Hoplitoplacenticeras cf. antokasoense, Hoplitoplacenticeras plasticum, Metaplacenticeras sp.
Hoplitoplacenticeras sp. Paulcke 1906 ammonite
Hoplitoplacenticeras plasticum Paulcke 1906 ammonite SUBSPECIES: Hoplitoplacenticeras plasticum plasticum
Metaplacenticeras sp. Spath 1926 ammonite | |
"Pseudophyllites peregrinus" = Pseudophyllites latus, Tetragonites sp., Anagaudryceras subsacya, Zelandites cf. kaiparaensis, Gaudryceras propemite, Gaudryceras cf. crassicostatum, Gaudryceras varagurense
"Pseudophyllites peregrinus" = Pseudophyllites latus Marshall 1926 ammonite
Tetragonites sp. Kossmat 1895 ammonite
Anagaudryceras subsacya Marshall 1926 ammonite
Zelandites cf. kaiparaensis Marshall 1926 ammonite
Gaudryceras propemite Marshall 1926 ammonite
Gaudryceras cf. crassicostatum Jimbo 1894 ammonite | |
Polyptychoceras sp., "Parasolenoceras sp." = Pseudoxybeloceras (Parasolenoceras)
Polyptychoceras sp. Yabe 1927 ammonite
"Parasolenoceras sp." = Pseudoxybeloceras (Parasolenoceras) Collignon 1969 ammonite | |
Ptychoceras sp. d'Orbigny 1842 ammonite |