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First marine ichthyofauna from the late Eocene of Santa Cruz province, patagonia, Argentina
Ist Teil von
Journal of South American earth sciences, 2021-04, Vol.107, p.103064, Article 103064
Ort / Verlag
Elsevier Ltd
Erscheinungsjahr
2021
Link zum Volltext
Quelle
Alma/SFX Local Collection
Beschreibungen/Notizen
The fossil record of chondrichthyans in Argentina is still poorly known. The aim of the present contribution is to describe teeth representing a chondrichthyan assemblage from Man Aike Formation (late Eocene) exposed in the Lago Argentino area, at Santa Cruz province, Argentina. This report includes Striatolamia macrota, Macrorhizodus praecursor, Carcharias sp., a possible member of the family Pristiophoridae, for the Argentine territory. Previous Eocene reports of Striatolamia macrota from Argentina are based on incorrect determination of specimens. The shark association, especially the abundance of lamniforms, may be indicative of litoral and shallow (less than 30 m depth) temperate to cold waters, as suggested by micropaleontological content.
•For the first time a late Eocene chondrichthyan assemblage is described from Santa Cruz province, Argentina.•Striatolamia macrota, Macrorhizodus praecursor, Carcharias sp., and Pristiophoridae are reported.•Species here described are frequent in fish faunas from the North Atlantic seas.