Trophonofusus muricatoides

Trophonofusus muricatoides
Shell of Trophonofusus muricatoides (holotype)
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Subclass:	Caenogastropoda
Order:	Neogastropoda
Family:	Fasciolariidae
Genus:	Trophonofusus
Species:	T. muricatoides
Binomial name
Trophonofusus muricatoides (Yokoyama, 1920)
Synonyms [1]
Trophon muricatoides Yokoyama, 1920

Trophonofusus muricatoides is a species of sea snail, a marine gastropod mollusk in the family Muricidae, the murex snails or rock snails. ^[1]

Description

(Original description) The shell is small, fusiform, and moderately thick. The whorls are very convex and separated by very deep sutures. They are both longitudinally ribbed and spirally striated. The ribs are rounded and strong on the upper whorls, becoming almost obsolete on the body whorl. They are separated by intervals of less breadth, numbering about thirteen on the penultimate whorl.

The spiral striae or threads are equal and distant, with five on all whorls except the body whorl. The body whorl has more than seven additional, though somewhat finer, threads on its base. There are also one or a few very fine interstitial lines between these threads.

The aperture is inverted flask-shaped with a short, somewhat bent canal. The inner lip is smooth, and the outer lip is thickened and smooth on the inside. ^[2]

Distribution

This marine species occurs off Japan.

References

1. Trophonofusus muricatoides (Yokoyama, 1920) . Retrieved through: World Register of Marine Species  on 16 September 2010.
2. Yokoyama, M. (1920). "Fossils from the Miura Peninsula and its immediate north". Journal of the College of Science, Tokyo Imperial University. 39 (6): 61. Retrieved 10 September 2025. This article incorporates text from this source, which is in the public domain .