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Profil taxonu

druh

Typhina expansa (G.B. Sowerby II, 1874)

říše Animalia - živočichové »  kmen Mollusca - měkkýši »  třída Gastropoda - plži »  řád Neogastropoda »  čeleď Muricidae - ostrankovití »  rod Typhina - ostrankovec

Vědecká synonyma

Typhis perchardei Radwin & d'Attilio, 1976

Obrázky

Typhina expansa

Autor: Jan Delsing

Typhina expansa

Autor: Jan Delsing

Typhina expansa

Autor: Bayer, F.M.

Typhina expansa

Autor: Kaicher

Typhina expansa

Autor: Shellauction

Typhina expansa

Autor: Daccarett, E.Y. & Bossio, V.S.

Taxon v check-listech zemí*

Severní Amerika: Bahamy, Panama, Portoriko, Trinidad a Tobago, Jižní Amerika: Guyana, Karibik, Kolumbie, Surinam, Venezuela

* Výčet zemí nemusí být kompletní

EN  

Popis

The shell is moderately small for the genus (maximum length 22 mm) and more or less broadly fusiform. The spire is high, consisting of one and one-fourth convex nuclear whorls and five or six angulate postnuclear whorls. The suture is obscured by subsequent whorls. The body whorl is moderately large and trigonal. The aperture is small and ovate. The peristome is entire and slightly erect, except posteriorly, where it is adherent. Each anal siphonal tube is moderately long, originates at the shoulder margin, near the midpoint of an intervarical space, and is directed dorsally and posteriorly; the base of each tube is aligned with a varix on the preceding whorl, and where these two structures touch, the shoulder is bisected. The siphonal canal is moderately broad, short, sealed, and weakly bent to the right and dorsally.
The body whorl bears four heavy, ropelike varices; the most recent one forms a moderately broadly expanded wing, drawn into a dorsally and posteriorly extended point at the shoulder margin, and dorsally reflected at its free margin. The ends of the spiral cords form small, dorsally curved points. The varical point at the shoulder margin is partially resorbed in older varices, leaving only a small, posteriorly in-hooked spine. Spiral sculpture consists of seven moderately strong body cords and two cords on the canal, these most prominent on the crests of older varices and on the leading edge of the most recent varix. The cords are discontinuous and nonaligned from one varix to the next.
Shell color is fleshy pink-orange, with purple-brown suffusions on parts of the spire, the anal tubes, and the tip of the canal. The ventral surface of the last varix and the interior of the aperture are white. A thin, flat-white, minutely axially striate intritacalx covers the shell where not abraded.
Radwin, G.E. & D'Attilio, A., 1976. Murex Shells of the World. An Illustrated Guide to the Muricidae.

Rozšíření

The Bahamas (Nassau) and Puerto Rico (west coast) to the southern Caribbean (Trinidad and off Surinam).
Radwin, G.E. & D'Attilio, A., 1976. Murex Shells of the World. An Illustrated Guide to the Muricidae.

Odkazy a literatura

EN Paleobiology Database [187946]

Paleobiology Database [https://paleobiodb.org/] [jako Typhina expansa (Sowerby, 1874)]
Datum citace: 11. prosinec 2015

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