Conchocele Gabb 1866

Genus Conchocele Gabb, 1866 Type species. Conchocele disjuncta Gabb, 1866, = C. bisecta (Conrad, 1849) after Kamenev et al. 2001. Type locality. C. disjuncta: Pliocene, Dead Man's Island, San Pedro, California; C. bisecta: Miocene, Astoria, Oregon. Species included. C. bisecta (Conrad, 1849), C...

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Bibliographic Details
Main Authors: Oliver, P. Graham, Frey, Melissa A.
Format: Other/Unknown Material
Language:unknown
Published: 2014
Subjects:
Biodiversity
Taxonomy
Animalia
Mollusca
Bivalvia
Lucinoida
Thyasiridae
Conchocele
Svalbard
Kamchatka
Online Access:https://zenodo.org/record/5120036
https://doi.org/10.5281/zenodo.5120036
Description
Summary:Genus Conchocele Gabb, 1866 Type species. Conchocele disjuncta Gabb, 1866, = C. bisecta (Conrad, 1849) after Kamenev et al. 2001. Type locality. C. disjuncta: Pliocene, Dead Man's Island, San Pedro, California; C. bisecta: Miocene, Astoria, Oregon. Species included. C. bisecta (Conrad, 1849), C. novaeguinensis Okutani, 2002, Tertiary fossil taxa in Krishtofovitch (Kamchatka), Thyasira conradi Rosenkrantz, 1942 (Svalbard). Diagnosis. Medium to very large shells. Equivalve. Inequilateral, prosogyrous beaks close to anterior, outline obliquely oval. Anterior margin sloping steeply, almost straight; anterior area defined by a distinct keel; lunule weakly impressed approximately half the length of the anterior area. Posterior margin broadly rounded and indented by a single sinus; posterior sulcus deep, distinctly angulated; escutcheon weakly defined; no distinct marginal sulcus. Anterior adductor muscle scar greatly elongate. Hinge teeth lacking. Ligament partially sunken. Anterior adductor muscle much longer than posterior; mantle unfused except for a small exhalant aperture; foot vermiform; ctenidia of two fully reflected demibranchs, filaments highly modified with the abfrontal zone divided into a tubular framework and a laminar zone with regular inter-lamellar junctions; tubes lined with bacteriocytes; lateral body pouches densely arborescent. Published as part of Oliver, P. Graham & Frey, Melissa A., 2014, Ascetoaxinus quatsinoensis sp. et gen. nov. (Bivalvia: Thyasiroidea) from Vancouver Island, with notes on Conchocele Gabb, 1866, and Channelaxinus Valentich-Scott & Coan, 2012, pp. 452-468 in Zootaxa 3869 (4) on pages 465-466, DOI:10.11646/zootaxa.3869.4.8, http://zenodo.org/record/4947378

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