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Cochlespira
''Cochlespira'' is a genus of sea snails, marine gastropod mollusks in the family Cochlespiridae. Description The species in this genus are characterized by their elongated fusiform spire and a long siphonal canal. The whorls show on their edge spinose projections. The shell is moderate in size, with a subacute, few whorled, glassy protoconch. It has an elongated slender, straight siphonal canal. The whorls are tabulated by a sharp recurved spinose or beaded keel, between which and the suture the surface is concave, nearly smooth. The anal sulcus is deep, narrow, the fasciole separated from the suture by a beaded ridge, the outer margin of the fasciole not elevated. Type † ''Pleurotoma cristata'' Conrad, 1848. Oligocene fossil. This group is extremely close to '' Ancistrosyrinx'' Dall, 1881, the latter differing only by having the anal sulcus at the suture, with no intervening ridge, while the outer margin of the fasciole has an elevated lamella between which and the reflect ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cochlespira Maorum
''Cochlespira'' is a genus of sea snails, marine gastropod mollusks in the family (biology), family Cochlespiridae. Description The species in this genus are characterized by their elongated fusiform spire and a long siphonal canal. The whorls show on their edge spinose projections. The shell is moderate in size, with a subacute, few whorled, glassy protoconch. It has an elongated slender, straight siphonal canal. The Whorl (mollusc), whorls are tabulated by a sharp recurved spinose or beaded keel, between which and the suture the surface is concave, nearly smooth. The anal sulcus is deep, narrow, the fasciole separated from the suture by a beaded ridge, the outer margin of the fasciole not elevated. Type † ''Pleurotoma cristata'' Conrad, 1848. Oligocene fossil. This group is extremely close to ''Ancistrosyrinx'' Dall, 1881, the latter differing only by having the anal sulcus at the suture, with no intervening ridge, while the outer margin of the fasciole has an elevated lam ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |