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Yonginella, a new bivalve (Mollusca) from the Silurian of Gotland

Published online by Cambridge University Press:  14 July 2015

Louis Liljedahl*
Affiliation:
Department of Historical Geology and Palaeontology, Sölvegatan 13, S-223 62 Lund, Sweden

Abstract

A new bivalve, Yonginella amica n. gen. and sp., is described from the Silurian of Gotland. Although it has a straight hinge line with cardinal and lateral teeth indicating relationship with the Cyrtodontidae of the Arcoida, its external morphology (with a conspicuous diagonal ridge and sulcus) differs considerably from all previously described taxa of this group. Yonginella amica exhibits a shell shape suitable for soft muddy bottoms (“snowshoe” adaptation), and is interpreted to have been a nonsiphonate suspension feeder with a semi-infaunal, byssate mode of life.

Type
Research Article
Copyright
Copyright © The Paleontological Society 

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