A new species of chimaeriform (Chondrichthyes, Holocephali) from the uppermost Cretaceous of the López de Bertodano Formation, Isla Marambio (Seymour Island), Antarctica-Reference-Cited by-同舟云学术

A new species of chimaeriform (Chondrichthyes, Holocephali) from the uppermost Cretaceous of the López de Bertodano Formation, Isla Marambio (Seymour Island), Antarctica

Published:2012-10-08 Issue:1 Volume:25 Page:99-106
ISSN:0954-1020
Container-title:Antarctic Science
language:en
Short-container-title:Antarctic Science

Author:

Otero Rodrigo A.,Rubilar-Rogers David,Yury-Yañez Roberto E.,Vargas Alexander O.,Gutstein Carolina S.,Mourgues Francisco Amaro,Robert Emmanuel

Abstract

AbstractWe describe a new chimaeriform fish, Callorhinchus torresi sp. nov., from the uppermost Cretaceous (late Maastrichtian) of the López de Bertodano Formation, Isla Marambio (Seymour Island), Antarctica. The material shows it is distinct from currently known fossil and extant species of the genus, whereas the outline of the tritors (abrasive surfaces of each dental plate) shows an intermediate morphology between earlier records from the Cenomanian of New Zealand and those from the Eocene of Isla Marambio. This suggests an evolutionary trend in tritor morphology in the lineage leading to modern callorhynchids, during the Late Cretaceous-Palaeogene interval.

Publisher

Cambridge University Press (CUP)

Subject

Geology,Ecology, Evolution, Behavior and Systematics,Oceanography

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