info:eu-repo/semantics/article
Additional Pelagornithidae remains from Seymour Island, Antarctica
Fecha
2020-04Registro en:
Acosta Hospitaleche, Carolina Ileana Alicia; Reguero, Marcelo Alfredo; Additional Pelagornithidae remains from Seymour Island, Antarctica; Pergamon-Elsevier Science Ltd; Journal of South American Earth Sciences; 99; 4-2020; 1-4
0895-9811
CONICET Digital
CONICET
Autor
Acosta Hospitaleche, Carolina Ileana Alicia
Reguero, Marcelo Alfredo
Resumen
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.