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New trigonioid bivalves from the Albian (Lower Cretaceous) of Alexander Island, Antarctic Peninsula; systematics, paleoecology, and Austral Cretaceous paleobiogeography

Simon R. A. Kelly
New trigonioid bivalves from the Albian (Lower Cretaceous) of Alexander Island, Antarctic Peninsula; systematics, paleoecology, and Austral Cretaceous paleobiogeography
Journal of Paleontology (March 1995) 69 (2): 264-279

Abstract

Newly discovered trigonioid bivalves are systematically described from the Late Albian of the Fossil Bluff Group of Alexander I. The fauna includes Nototrigonia (Nototrigonia) ponticula Skwarko, N. (Callitrigonia) offsetensis n.sp., Eselaevitrigonia macdonaldi n.sp., Pterotrigonia (Pisotrigonia) capricornia (Skwarko), and Pacitrigonia praenuntians n.sp. It represents the first Albian trigonioid fauna described from the Antarctic. It is also the first published record of the Nototrigoniinae (excluding Pacitrigonia) outside Australasia. Paleoecologically, this fauna represents the shallowest and highest energy molluscan assemblage from the Fossil Bluff Group and occurs near the base of a significant transgressive unit, the Mars Glacier Member of the Neptune Glacier Formation. The paleogeography of austral Cretaceous trigonioids is reviewed. Endemic centers are identified in India-East Africa, southern South America, and Australasia. Only one trigonioid genus, Pacitrigonia, had its origin in the Antarctic. (Auth. mod.)


ISSN: 0022-3360
EISSN: 1937-2337
Coden: JPALAZ
Serial Title: Journal of Paleontology
Serial Volume: 69
Serial Issue: 2
Title: New trigonioid bivalves from the Albian (Lower Cretaceous) of Alexander Island, Antarctic Peninsula; systematics, paleoecology, and Austral Cretaceous paleobiogeography
Author(s): Kelly, Simon R. A.
Affiliation: British Antarctic Survey, Natural Environment Research Council, Cambridge, United Kingdom
Pages: 264-279
Published: 199503
Text Language: English
Publisher: Paleontological Society, Lawrence, KS, United States of America
References: 118
Accession Number: 1995-038806
Categories: Invertebrate paleontologyStratigraphy
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. strat. col., 6 tables, sketch maps
S35°00'00" - N37°00'00", W18°00'00" - E51°00'00"
S77°00'00" - S63°00'00", W77°30'00" - W56°30'00"
S44°00'00" - S10°00'00", E113°00'00" - E154°00'00"
N07°00'00" - N37°00'00", E68°00'00" - E97°00'00"
S47°30'00" - S34°30'00", E166°30'00" - E178°30'00"
S55°00'00" - N13°00'00", W82°00'00" - W35°00'00"
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Reference includes data from the Antarctic Bibliography, United States
Update Code: 199514
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