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Eucyclotoma cingulata (Dall, 1890)

říše Animalia - živočichové »  kmen Mollusca - měkkýši »  třída Gastropoda - plži »  řád Neogastropoda »  čeleď Raphitomidae »  rod Eucyclotoma

Obrázky

Eucyclotoma cingulata

Autor: Dall, W.H.

Eucyclotoma cingulata

Autor: Williams, P.

Taxon v check-listech zemí*

Severní Amerika: Bahamy, Jižní Amerika: Brazílie

* Výčet zemí nemusí být kompletní

EN  

Popis

Shell large, fusiform, of a rich reddish brown, deepest on the pillar, with a closely adherent, very thin, polished epidermis; whorls seven, without the nucleus, which is lost in the specimen, while the outer coat of the apical whorls is much eroded ; whorls full and rounded, suture distinct, not appressed or channeled ; transverse sculpture only of tine inconspicuous lines of growth; spiral sculpture of two sorts: first, a fine, sharp, slightly irregular striation, which covers the whole surface; secondly, of revolving elevated cinguli, of which three on the periphery are more widely and deeply separated and more elevated than the others; these three have interspaces equal to or wider than themselves; on the last whorl in front of the periphery the cinguli are flattopped little elevated wide bands with narrower interspaces, this sculpture becoming obscure toward the canal; above the periphery is one wellmarked cingulum slightly turreting the whorl which inclines from it to the suture in a flattened manner; aperture pointed in front, wider behind ; pillar simple, perfectly straight, anteriorly attenuated ; body and pillar with a thin dark brown glaze; outer lip very thin, sharp, crenulated by the outside sculpture, which also grooves the interior; notch shallow, wide; fasciole hardly visible; canal short, wide, hardly differentiated, straight. Altitude of shell 73 ; maximum diameter 30MM.
Dall, W.H. 1990. Scientific results of explorations by the U. S. Fish Commission Steamer “Albatross”. No. VII. Preliminary report on the collection of Mollusca and Brachiopoda obtained in 1887–88.

Rozšíření

Off the coast of Ecuador

Odkazy a literatura

EN Galli C.: WMSDB - Wolrdwide Mollusc Species Data Base July 10, 2013 [http://www.bagniliggia.it/WMSD/WMSDhome....] [jako Eucyclotoma cingulata (Dall, 1890)]
Datum citace: 22. listopad 2013

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