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Geological Society, London, Special Publications; 2006; v. 258; p. 83-100;
DOI: 10.1144/GSL.SP.2006.258.01.06
© 2006 Geological Society of London

Late Cretaceous Antarctic fish diversity

J. Kriwet1, J. M. Lirio2, H. J. Nuñez2, E. Puceat3 & C. Lécuyer3

1 Museum of Natural History, Palaeontology, Humboldt-University Berlin, Invalidenstr. 43, 10115 Berlin, Germany juergen.kriwet{at}museum.hu-berlin.de
2 Instituto Antártico Argentino, Cerrito 1248, Capital Federal (1010), Argentina
3 UMR 5125 — CNRS, UFR Sciences de la Terre, Bat 402 (Géode), Université Claude Bernard Lyon 1, 27–43 Bd du 11 Novembre 1918, 69622 Villeurbanne cédex, France

New material from the Santa Marta Formation (late Coniacian-?early Maastrichtian) of James Ross Island contributes significantly to the current knowledge of Late Cretaceous Antarctic fish diversity. The taxon list for the Santa Marta Formation is extended, and new records of neoselachians and teleosts are reported. The stratigraphic ranges of some previously known taxa are enlarged, and the palaeobiogeography and palaeoecology of Late Cretaceous Antarctic fishes are discussed. Top predators that occupied the higher levels in the food chain along with marine tetrapods dominate the marine faunas from the Santa Marta and López de Bertodano formations. The only fish adapted to crushing hard-shelled invertebrates were the chimeroids. Rays, an important component of marine fish associations, as well as fish from lower trophic levels, remain unknown from the Late Cretaceous of Antarctica.





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J. E. Martin and J. A. Crame
Palaeobiological significance of high-latitude Late Cretaceous vertebrate fossils from the James Ross Basin, Antarctica
Geological Society, London, Special Publications, 2006; 258: 109 - 124.
[Abstract] [PDF]