Conchocele Gabb 1866
- Dataset
- Ascetoaxinus quatsinoensis sp. et gen. nov. (Bivalvia: Thyasiroidea) from Vancouver Island, with notes on Conchocele Gabb, 1866, and Channelaxinus Valentich-Scott & Coan, 2012
- Rank
- GENUS
Classification
- kingdom
- Animalia
- phylum
- Mollusca
- class
- Bivalvia
- order
- Lucinoida
- family
- Thyasiridae
- genus
- Conchocele
diagnosis
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.
materials_examined
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).
type_taxon
Type species. Conchocele disjuncta Gabb, 1866, = C. bisecta (Conrad, 1849) after Kamenev et al. 2001.
Name
- Homonyms
- Conchocele Gabb 1866