Fusiturricula lavinoides
| Fusiturricula lavinoides | |
|---|---|
 | |
| Shell of Fusiturricula lavinoides (holotype at the Paleontological Research Institution) | |
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Subclass: | Caenogastropoda |
| Order: | Neogastropoda |
| Superfamily: | Conoidea |
| Family: | Drilliidae |
| Genus: | Fusiturricula |
| Species: | F. lavinoides |
| Binomial name | |
| Fusiturricula lavinoides (Olsson A., 1922) | |
| Synonyms[1] | |
| |
Fusiturricula lavinoides is a species of sea snail, a marine gastropod mollusk in the family Drilliidae.[1]
Description
The size of an adult shell attains 54 mm, its diameter 20 mm.
(Original description) The shell is rather large and moderately solid, consisting of about twelve whorls that are heavily sculptured with ribs and spiral cords. The protoconch is composed of two smooth, slightly bulbous whorls, while the post-nuclear whorls increase uniformly in size; these are concave above and widest below the periphery. The suture is strongly appressed and is preceded by a spiral cord.
The anal fasciole is flat or concave, appearing nearly smooth except for approximately three small, widely spaced spirals. The remainder of the whorls are strongly sculptured with eight to twelve axial ribs, which are absent from both the anal fasciole and the base of the last whorl. The spiral sculpture consists of three or four strong cords on the spire-whorls, increasing to ten or more on the body whorl, in addition to those located on the anterior canal. Finer, intercalated threads are present between the main spiral cords on the later whorls, and the intervals between the spirals are finely and longitudinally striated by long growth lines.
The siphonal canal is long and nearly straight, becoming slightly calloused along the inner lip. The outer lip is thin and features a shallow anal sinus situated within the sutural fasciole. [2]
Distribution
This species occurs in the demersal zone of Brazil.
References
- 1 2 Rosenberg, G. (2015). Fusiturricula lavinoides (Olsson, 1922). In: MolluscaBase (2015). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=532867 on 2016-10-05
- ↑ Olsson, Axel A. "The Miocene of Northern Costa Rica." Bulletins of American Paleontology 9.39 (1922): 1–168.
This article incorporates text from this source, which is in the public domain.
External links
- "Fusiturricula lavinoides". Gastropods.com. Retrieved 16 January 2019.