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A new genus and species of Thyasiridae (Mollusca, Bivalvia) from deep-water, Beaufort Sea, northern Alaska
Valentich-Scott, P.; Powell, C.L.; Lorenson, T.D.; Edwards, B.E. (2014). A new genus and species of Thyasiridae (Mollusca, Bivalvia) from deep-water, Beaufort Sea, northern Alaska. ZooKeys 462: 11-26. dx.doi.org/10.3897/zookeys.462.6790
In: ZooKeys. Pensoft: Sofia. ISSN 1313-2989, more
Peer reviewed article  

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Keywords
    New genus; New species; Axinus J. Sowerby, 1821 [WoRMS]; Bivalvia [WoRMS]; Maorithyas C. A. Fleming, 1950 [WoRMS]; Mollusca [WoRMS]; Parathyasira Iredale, 1930 [WoRMS]; Spinaxinus Oliver & Holmes, 2006 [WoRMS]; Thyasiridae Dall, 1900 (1895) [WoRMS]; Wallerconcha Valentich-Scott & C. L. Powell, 2014 † [WoRMS]; Marine
Author keywords
    Thyasiridae, Beaufort Sea, Alaska, Mollusca, Bivalvia, Maorithyas, Wallerconcha, Spinaxinus, Axinus, Parathyasira, chemoautotrophic, endosymbiosis, taxonomy, Arctic Ocean

Authors  Top 
  • Valentich-Scott, P.
  • Powell, C.L.
  • Lorenson, T.D.
  • Edwards, B.E.

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 Wallerconcha sarae. These new taxa are compared with known modern and fossil genera and species of thyasirds.

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