Megasurcula howei | |
---|---|
Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Mollusca |
Class: | Gastropoda |
Subclass: | Caenogastropoda |
Order: | Neogastropoda |
Superfamily: | Conoidea |
Family: | Pseudomelatomidae |
Genus: | Megasurcula |
Species: | †M. howei |
Binomial name | |
†Megasurcula howei Hanna and Hertlein, 1938 | |
Synonyms | |
|
Megasurcula howei is an extinct species of sea snail, a marine gastropod mollusk in the family Pseudomelatomidae, the turrids and allies.
Description
The length of the shell attains 36 mm, its diameter 23.6 mm.
This high-spired, biconic species differs from Megasurcula condonana (Anderson and Martin, 1914) by having a smoothly conic spire and relatively narrower body whorl. When the body whorl angulation is used as a point of reference, in non-apertural view, the upper cone of M. howei is relatively higher than the lower cone, whereas the reverse is true in specimens of the stout-shelled M. condonana. Further differences are the more acute sutural angle and the concave profile of M. condonana.
It is closely related to † Megasurcula guayasensis of the Miocene in Ecuador, but differs by being less slender, a bit taller and less finely noded.
Distribution
Fossils of this marine species have been found in Miocene strata of the Temblor Formation, California.
References
- Bulletin of American Paleontology, California Acad. Sci., Proc, 4th ser., 4, VOL. XXXIII (1949-1952)
- Miocene Gastropods and Biostratigraphy of the Kern River Area, California; United States Geological Survey Professional Paper 642 : Megasurcula howei This article incorporates text from this source, which is in the public domain.
- Hanna and Hertlein, 1938, Journal of Paleontology v. 12 no. 1 p. 107
External links
Taxon identifiers | |
---|---|
Megasurcula howei |