Pleioptygma helenae
Encyclopedia
Pleioptygma helenae is a species
of sea snail
, a marine gastropod mollusk in the family
Pleioptygmatidae.
It is the only known living species in this genus and the only extant species in the family Pleioptygmatidae.
.
The type locality is Gorda Bank, Honduras.
Fossil record from Neogene
include southeastern USA.
length is 123 mm.
The anatomy of the family Pleioptygmatidae is defined according to this the only extant species.
Species
In biology, a species is one of the basic units of biological classification and a taxonomic rank. A species is often defined as a group of organisms capable of interbreeding and producing fertile offspring. While in many cases this definition is adequate, more precise or differing measures are...
of sea snail
Sea snail
Sea snail is a common name for those snails that normally live in saltwater, marine gastropod molluscs....
, a marine gastropod mollusk in the family
Family (biology)
In biological classification, family is* a taxonomic rank. Other well-known ranks are life, domain, kingdom, phylum, class, order, genus, and species, with family fitting between order and genus. As for the other well-known ranks, there is the option of an immediately lower rank, indicated by the...
Pleioptygmatidae.
It is the only known living species in this genus and the only extant species in the family Pleioptygmatidae.
Distribution
HondurasHonduras
Honduras is a republic in Central America. It was previously known as Spanish Honduras to differentiate it from British Honduras, which became the modern-day state of Belize...
.
The type locality is Gorda Bank, Honduras.
Fossil record from Neogene
Neogene
The Neogene is a geologic period and system in the International Commission on Stratigraphy Geologic Timescale starting 23.03 ± 0.05 million years ago and ending 2.588 million years ago...
include southeastern USA.
Description
The maximum recorded shellGastropod shell
The gastropod shell is a shell which is part of the body of a gastropod or snail, one kind of mollusc. The gastropod shell is an external skeleton or exoskeleton, which serves not only for muscle attachment, but also for protection from predators and from mechanical damage...
length is 123 mm.
The anatomy of the family Pleioptygmatidae is defined according to this the only extant species.
Further reading
- Quinn J. F. Jr. & Lyons W. G. (1984). "A partial description of the anatomy of Pleioptygma helenae (Gastropoda: Neogastropoda)". American Malacological Bulletin 3(1): 97-98.