Additional Pelagornithidae remains from Seymour Island, Antarctica

Two incomplete mandibles are assigned to Pelagornithidae given the presence of a well marked neurovascular furrow and the unique bony projections, or “pseudo-teeth”, along the crista tomialis. Specimens IAA-Pv 175 from Ypresian levels of La Meseta Alloformation (Cucullaea I Allomember), and IAA-Pv 8...

Full description

Bibliographic Details
Published in:Journal of South American Earth Sciences
Main Authors: Acosta Hospitaleche, Carolina Ileana Alicia, Reguero, Marcelo Alfredo
Format: Article in Journal/Newspaper
Language:English
Published: Pergamon-Elsevier Science Ltd
Subjects:
BARTONIAN
DENTARY
EOCENE
MARAMBIO
ODONTOPTERIGYFORMES
PALEOGENE
YPRESIAN
https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
Acosta
Alicia
Antarctic
Antarctic Peninsula
Argentina
Argentino
Marambio
Seymour
Seymour Island
West Antarctica
Antarc*
Antarctica
Dirección Nacional del Antártico
Instituto Antártico Argentino
Online Access:http://hdl.handle.net/11336/133343
Description
Summary:Two incomplete mandibles are assigned to Pelagornithidae given the presence of a well marked neurovascular furrow and the unique bony projections, or “pseudo-teeth”, along the crista tomialis. Specimens IAA-Pv 175 from Ypresian levels of La Meseta Alloformation (Cucullaea I Allomember), and IAA-Pv 823 from Bartonian beds of the Submeseta Alloformation, in Seymour Island (Antarctic Peninsula, West Antarctica) corresponds to the morpho-type 1, previously proposed for Antarctic pseudo-tooth birds. The intermediate condition of the pseudo-teeth of these specimens reinforces the idea that diet changed from piscivory to molluscivory along the evolutive history of the group. Fil: Acosta Hospitaleche, Carolina Ileana Alicia. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Departamento Científico de Paleontología de Vertebrados; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; Argentina Fil: Reguero, Marcelo Alfredo. Ministerio de Relaciones Exteriores, Comercio Interno y Culto. Dirección Nacional del Antártico. Instituto Antártico Argentino; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. División Paleontología Vertebrados; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; Argentina

Similar Items