Megasurcula remondii
| Megasurcula remondii | |
|---|---|
 | |
| Shell of † Megasurcula remondii(holotype) | |
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Subclass: | Caenogastropoda |
| Order: | Neogastropoda |
| Superfamily: | Conoidea |
| Family: | Pseudomelatomidae |
| Genus: | Megasurcula |
| Species: | †M. remondii |
| Binomial name | |
| †Megasurcula remondii (W.M. Gabb, 1866) | |
| Synonyms | |
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Megasurcula remondii is an extinct species of sea snail, a marine gastropod mollusk in the family Pseudomelatomidae, the turrids and allies.[1] [2]
Description
The length of the shell attains 78.3 mm.
(Original description) The shell is broadly fusiform in shape and possesses an elevated spire composed of four or five whorls, which are subangulated and separated by an impressed suture. The surface is marked by numerous small, revolving ribs that are rounded with acute interspaces, and these ribs more or less regularly alternate in size. They are crossed by strong lines of growth, which, in some specimens, presents an approach to a regular reticulation.
The body whorl constitutes three-fourths of the total length of the shell; it is broadly and regularly convex in the middle and usually features a revolving depression situated just below the suture. In some instances, this groove or depression is replaced by a flat space. The aperture is long and narrow, featuring an inner lip that is slightly incrusted. While the outer lip remains unknown; the siphonal canal is straight. [3]
Distribution
Fossils of this marine species were found in Miocene strata of Arroyo San Antonio, near Tomales Bay, California.
References
- ↑ Megasurcula remondii Megasurcula remondii. 26 April 2026. Retrieved through: World Register of Marine Species.
- ↑ Worldwide Mollusc Specieqs Data Base: Megasurcula remondii
- ↑ Gabb, W.M. (1866–1869). "Geological Survey of California. Palaeontology. Volume II. Cretaceous and Tertiary fossils". Palaeontology. II: 3–4. Retrieved 26 April 2026.
This article incorporates text from this source, which is in the public domain.
- U. S. Grant and H. R. Gale. 1931. Catalogue of the Marine Pliocene and Pleistocene Mollusca of California. Memoirs of the San Diego Society of Natural History 1:1-1036