Conchocele Gabb 1866

• Main Authors: Oliver, P. Graham, Frey, Melissa A.
• Format: Other/Unknown Material
• Language: unknown
• Published: Zenodo 2014
• Subjects: Biodiversity; Taxonomy; Animalia; Mollusca; Bivalvia; Lucinoida; Thyasiridae; Conchocele; Kamchatka; Svalbard
• Online Access: https://doi.org/10.5281/zenodo.5120036; http://treatment.plazi.org/id/A462AF16B9704C1ACBBBB388672917E0

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