NOTES ON DESEADAN MACRAUCHENIIDAE

Authors

  • Richard L. Cifelli
  • Miguel F. Soria

Abstract

Remains of Deseadan (early Oligocene) macraucheniids are reviewed and described. A new genus is recorded from Patagonia and a new species from Bolivia is tentatively referred to Coniopternium Ameghino, 1895 (including Notodiaphorus Loomis, 1914). Caliphrium Ameghino, 1895 is considered a nomen dubium. Pternoconius, new genus, appears to be the most primitive of the paraphyletic subfamily Cramaucheniinae; the species of Coniopternium from a graded series approaching more advanced forms. NOTAS SOBRE MACRAUCHENIIDAE DEL DESEADENSE. - Se revisan y describen los Macraucheniidae del Deseadense (Oligoceno temprano). Se reconoce un nuevo género, Pternoconius, procedente de la Provincia del Chubut, Argentina y una nueva especie en base a restos exhumados en Salla-Luribay, Bolivia. Esta última se refiere tentativamente a Coniopternium Ameghino, 1895 (incluyendo a Notodiaphorus Loomis., 1914). Caliphrium Ameghino, 1895 se considera nomen dubium. Pternoconius nov. gen. sería el más primitivo de la subfamilia Cramaucheniinae; las especies de Coniopternium forman una serie estructural gradual hacia otras más evolucionadas, cronológicamente posteriores.

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Published

2013-10-05

Issue

Vol. 20 No. 1-2

Section

Articles

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How to Cite

NOTES ON DESEADAN MACRAUCHENIIDAE. (2013). Ameghiniana, 20(1-2), 141-153. https://www.ameghiniana.org.ar/index.php/ameghiniana/article/view/1799