First marine ichthyofauna from the Upper Cretaceous (Jaguel Formation; Maastrichtian) from Río Negro province, Argentina

  • Sergio Bogan Universidad Maimónides; Departamento de Ciencias Naturales y Antropología
  • Federico L. Agnolin Museo Argentino de Ciencias Naturales Bernardino Rivadavia; Laboratorio de Anatomía Comparada y Evolución de los Vertebrados
Keywords: Maastrichtian, Serratolamna serrata, Lamniformes, Squalicorax, Enchodus

Abstract

This paper describes several fossil teeth coming from marine sediments from the Bajo Trapalcó locality, Río Negro province, Patagonia, Argentina. The ichthyofauna described here is composed by six different chondrichtyan taxa (Serratolamna serrata, Squalicorax pristodontus, Cretalamna appendiculata, Carcharias sp., Odontaspis sp. and cf. Pseudohypolophus mcnultyi) and two Teleostei of the genus Enchodus (aff. E. ferox and aff. E. gladiolus). Serratolamna serrata is the most abundant species, and it represents the southernmost record for the species and the first record for Argentina. The records of Enchodus, Squalicorax pristodontus and cf. Pseudohypolophus mcnultyi, constitute the first mention for these taxa in Argentina. The taxa described here characterize the paleoichthyofaunas of the Upper Cretaceous seas from different regions of the world, contributing with new information toward the comprehension of the Mesozoic ichthyofunas from the southern regions of South America.

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Published
2010-01-01
How to Cite
Bogan, S., & Agnolin, F. (2010). First marine ichthyofauna from the Upper Cretaceous (Jaguel Formation; Maastrichtian) from Río Negro province, Argentina . Papéis Avulsos De Zoologia, 50(12), 175-188. https://doi.org/10.1590/S0031-10492010001200001
Section
naodefinida