Casamayor bed 3 (Eocene of Argentina)

Where: Santa Cruz, Argentina (47.7° S, 66.7° W: paleocoordinates 50.3° S, 56.7° W)

• coordinate based on nearby landmark

• local area-level geographic resolution

When: Casamayor Formation, Casamayoran (55.8 - 48.0 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: marine

Size class: macrofossils

Primary reference: A. Tournouër. 1903. Note sur la géologie et la paléontologie de la Patagonie. Bulletin de la Société Géologique de France 3:464-473 [J. Alroy/J. Wertheim/J. Wertheim]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 50067: authorized by John Alroy, entered by Jill Wertheim on 05.05.2005

Creative Commons license: CC BY (attribution)

Taxonomic list

• first reported by M. Ortmann (no reference)
unclassified
  -
Rhynchonellata
 Terebratulida - Terebratellidae
"Magellania lenticularis" = Neothyris lenticularis Deshayes 1839
Terebratella dorsata Gmelin 1792
 Rhynchonellida - Notosariidae
"Rhynchonella squamosa" = Tegulorhynchia squamosa, "Rhynchonella plicigera" = Plicirhynchia plicigera
"Rhynchonella squamosa" = Tegulorhynchia squamosa Hutton 1873
"Rhynchonella plicigera" = Plicirhynchia plicigera Ihering 1897
Bivalvia
 Pectinida - Pectinoidae
"Pecten centralis" = Jorgechlamys centralis Sowerby 1846 scallop
 Ostreida - Ostreidae
Gastropoda
 Ptenoglossa - Epitoniidae
 Sorbeoconcha - Turritellidae
 Trochoidea - Trochidae
Gibbula dalli Ihering 1897 top snail
Chondrichthyes
 Lamniformes - Lamnidae
Carcharodon sp. Smith 1838 white shark
cf. Carcharodon auriculatus Blainville 1818 white shark
Echinoidea
 Camarodonta - Echinidae
Psammechinus tournoueri n. sp. sea urchin
Isechinus (Toxopneustes) praecursor Ortmann 1900 sea urchin
 Spatangoida - Schizasteridae
Linthia gaudryii n. sp. heart urchin
 Cassiduloida -
 Clypeasteroida - Monophorasteridae
"Iheringina (Scutella) patagonensis" = Iheringiella patagonensis
"Iheringina (Scutella) patagonensis" = Iheringiella patagonensis Desor 1847 sand dollar