A New Genus for Vesicomya inflata Kanie & Nishida, a Lucinid Shell Convergent with that of Vesicomyids, from Cretaceous Strata of Hokkaido, Japan

Amano, K., Jenkins, R. G., Kurihara, Y. and Kiel, S. (2008) A New Genus for Vesicomya inflata Kanie & Nishida, a Lucinid Shell Convergent with that of Vesicomyids, from Cretaceous Strata of Hokkaido, Japan Veliger, 50 (4). pp. 255-262.

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Abstract

Newly collected specimens of the large bivalve Vesicomya inflata Kanie & Nishida from the lower Cenomanian Tenkaritoge Formation reveal that it is not I vesicomyid but is instead all unusual lucinid. The new monotypic genus Ezolucina is herein proposed for this species, which is characterized by venerid or vesicomyid shell shape. large size, a smooth surface, a deeply impressed lunule. one cardinal and one anterior lateral tooth in the right valve. and two cardinal teeth in the left valve. Stable carbon isotope analyses and petrographic observations show that the carbonate concretions yielding this species do not represent ancient hydrocarbon-seep deposits as was suggested previously. Rather. Ezolucina inflata and the associated solemyid, lucinid, thyasirid, and manzanellid bivalves lived in organic- and sulfide-rich sediment.

Document Type:	Article
Keywords:	cold seeps bivalve mollusks
Research affiliation:	Kiel University
Refereed:	No
ISSN:	0042-3211
Date Deposited:	12 Jan 2012 06:06
Last Modified:	09 Oct 2012 03:56
URI:	http://eprints.uni-kiel.de/id/eprint/15588

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