Conchocele Gabb 1866
Creators
- 1. National Museum of Wales, Cathays Park, Cardiff, CF 10 3 NP, Wales, UK. E-mail: graham. oliver @ museumwales. ac. uk
- 2. Royal BC Museum, 675 Belleville Street, Victoria, British Columbia V 8 W 9 W 2 Canada. E-mail: mfrey @ royalbcmuseum. bc. ca
Description
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.
Notes
Files
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Linked records
Additional details
Identifiers
Biodiversity
- Family
- Thyasiridae
- Genus
- Conchocele
- Kingdom
- Animalia
- Order
- Lucinoida
- Phylum
- Mollusca
- Scientific name authorship
- Gabb
- Taxon rank
- genus
- Type status
- holotype
- Taxonomic concept label
- Conchocele Gabb, 1866 sec. Oliver & Frey, 2014
References
- Gabb, W. M. (1866) Description of the Tertiary invertebrate fossils. California Geological Survey, Paleontology, 2 (1), part 1, 1 - 38.
- Conrad, T. A. (1849) Fossils from the northwestern America. In: Dana, J. D. (Ed.), U. S. Exploring Expedition, 1838 - 1842, Under the Command of Charles Wilkes. Vol. 10. Geology, Appendix. G. P. Putnam, New York, pp. 723 - 729.
- Kamenev, G. M., Nadtochy, V. A. & Kuznetsov, A. P., (2001) Conchocele bisecta (Conrad, 1849) (Bivalvia: Thyasiridae) from cold-water methane rich areas of the Sea of Okhotsk. The Veliger, 44, 84 - 94.
- Okutani, T. (2002) A new thyasirid Conchocele novaeguineensis n. sp. from a thanatocoenosis associated with a possible cold seep activity off New Guinea. Venus, 61, 141 - 145.
- Rosenkrantz, A. (1942) Slregten Thyasira's geologiske Optraeden. Meddelelser fra Dansk Geologisk Forening, 10, 277 - 278.