A new limid bivalve from the La Meseta Formation (Eocene) of Seymour Island, Antarctic Peninsula

Several specimens of an unusual limid bivalve were collected recently from basal transgressive facies (Telm 1) of the Eocene La Meseta Formation, Seymour (Marambio) Island, Antarctic Peninsula. This bivalve represents a new subgenus and species, described herein as Acesta (Antarcticesta) laticosa su...

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Bibliographic Details
Main Authors: Stilwell, Jeffrey D., Gaździcki, Andrzej
Format: Article in Journal/Newspaper
Language:English
Published: Faculty of Geology University of Warsaw 2003
Subjects:
Antarc*
Antarctic
Antarctic Peninsula
Antarctica
Seymour Island
Online Access:https://gq.pgi.gov.pl/agp/article/view/10355
Description
Summary:Several specimens of an unusual limid bivalve were collected recently from basal transgressive facies (Telm 1) of the Eocene La Meseta Formation, Seymour (Marambio) Island, Antarctic Peninsula. This bivalve represents a new subgenus and species, described herein as Acesta (Antarcticesta) laticosa subgen. et sp. n. Acesta (Acesta) bibbyi STILWELL & ZINSMEISTER, 1992, and Acesta (Antarcticesta) laticosta subgen. et sp. n. are the only limid bivalves recorded from the Eocene of Antarctica, but the history of the family in Antarctica extends from Cretaceous to Recent. Acesta (Antarcticesta) subgen. n. is monotypic and endemic to Antarctica with no known close relative.

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