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A new genus and species of Thyasiridae (Mollusca, Bivalvia) from deep-water, Beaufort Sea, northern Alaska.

Authors
  • Valentich-Scott, Paul1
  • Powell, Charles L1
  • Ii2
  • Lorenson, Thomas D2
  • Edwards, Brian E2
  • 1 Santa Barbara Museum of Natural History, 2259 Puesta del Sol Road, Santa Barbara, CA 93105.
  • 2 U.S. Geological Survey, 345 Middlefield Road, Menlo Park, CA 94025.
Type
Published Article
Journal
ZooKeys
Publisher
Pensoft Publishers
Publication Date
Jan 01, 2014
Issue
462
Pages
11–26
Identifiers
DOI: 10.3897/zookeys.462.6790
PMID: 25589851
Source
Medline
Keywords
License
Unknown

Abstract

Bivalve mollusk shells were collected in 2350 m depth in the Beaufort Sea, Arctic Ocean off northern Alaska. Initial identification suggested the specimens were a member of the bivalve family Thyasiridae, but no known eastern Pacific or Arctic living or fossil thyasirid resembled these deep-water specimens. Comparisons were made with the type of the genera Maorithyas Fleming, 1950, Spinaxinus Oliver & Holmes, 2006, Axinus Sowerby, 1821, and Parathyasira Iredale, 1930. We determined the Beaufort Sea species represents a new genus, herein described as Wallerconcha. These specimens also represent a new species, herein named Wallerconchasarae. These new taxa are compared with known modern and fossil genera and species of thyasirds.

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