Where: Antarctica (64.2° S, 57.8° W: paleocoordinates 62.5° S, 68.2° W)
• coordinate stated in text
• local area-level geographic resolution
When: Lopez de Bertodano Formation, Early/Lower Maastrichtian (70.6 - 66.0 Ma)
• STRATIGRAPHIC RELATIONS: From the Lopez de Bertodano Fm, which is unconformably overlain by glacigenic diamictites and by the James Ross Island Volcanic Group. AGE: Early Maastrichtian, on the basis of ammonite biostratigraphy. STRATIGRAPHIC POSITION: From a the lower (185-250 m) part of Unit B.
• group of beds-level stratigraphic resolution
Environment/lithology: coastal; lithified, silty sandstone and lithified sandstone
Size class: macrofossils
Preservation: cast, mold/impression
Collection methods: surface (in situ),
• COLLECTOR: E. B. Olivero, D. R. Martinioni, and F. J. Mussel. REPOSITORY: Not stated, but presumably the Centro de Investigaciones en Recurso Geologicos (CIRGEO)..
Primary reference: E. B. Olivero, D. R. Martinioni, and F. J. 1992. Upper Cretaceous sedimentology and biostratigraphy of western Cape Lamb (Vega Island, Antarctica). Implications of sedimentary cycles and evolution of the basin. Geologia de la Isla James Ross 47-166 [A. Hendy/A. Hendy]more details
Purpose of describing collection: biostratigraphic analysis
PaleoDB collection 83552: authorized by Austin Hendy, entered by Austin Hendy on 22.08.2008, edited by Matthew Clapham
Creative Commons license: CC BY (attribution)
Taxonomic list
Echinoidea | |
| |
Malacostraca | |
Decapoda indet. Latreille 1802 decapod | |
Gastropoda | |
Scaphander sp. Monfort 1810 snail | |
Natica sp. Scopoli 1777 moon snail
Eunaticina arctowskiana moon snail | |
Taioma sp. Finlay and Marwick 1937 snail | |
Cephalopoda | |
Eutrephoceras sp. Hyatt 1894 | |
Kitchinites cf. laurae Macellari 1986 ammonite | |
Grossouvrites joharae Salazar et al. 2010 ammonite
Maorites tuberculatus Howard 1958 ammonite
Maorites densicostatus Kilian and Reboul 1909 ammonite | |
Bivalvia | |
"Eselaevitrigonia regina" = Laevitrigonia (Eselaevitrigonia)
"Eselaevitrigonia regina" = Laevitrigonia (Eselaevitrigonia) clam | |
Oistotrigonia pygoscelium Wilckens 1910 clam | |
Thracia sp. Blainville 1824 clam | |
Lahillia sp. Cossmann 1899 clam | |
? Cyclorisma sp. Dall 1902 venus clam | |
Panopea sp. Menard 1807 clam | |
Cucullaea sp. Lamarck 1801 clam | |
Modiolus pontotocensis mussel |