Odostomia kennerleyi
Encyclopedia
Odostomia kennerleyi is a species
of sea snail
, a marine
gastropod mollusk in the family
Pyramidellidae
, the pyrams and their allies.
. In addition to these wrinkles, many faint, closely placed spiral and vertical grooves are present. The nuclear whorls
are small, numbering about two and one-half. They form a depressed spire
, the axis of which is almost at right angles to the axis of the latter whorls. The six post-nuclear whorls are very wide, inflated, well rounded, faintly shouldered at the summit. The sutures are well marked and simple. The periphery and the base of the body whorl are inflated, well rounded, the latter decidedly contracted and narrowly umbilicated. The aperture
is large, suboval, somewhat effuse anteriorly. The posterior angle is obtuse. The outer lip
is thin. The columella is straight, obliquely inserted, revolute, not re-enforced by the base, with an oblique weak fold near its insertion. The parietal wall is apparently without a callus.
and Puget Sound
, Washington.
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
Marine (ocean)
Marine is an umbrella term. As an adjective it is usually applicable to things relating to the sea or ocean, such as marine biology, marine ecology and marine geology...
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...
Pyramidellidae
Pyramidellidae
Pyramidellidae, common name the pyram family, or pyramid shells, is a voluminous taxonomic family of mostly small and minute ectoparasitic sea snails, marine heterobranch gastropod molluscs or micromolluscs....
, the pyrams and their allies.
Description
The yellowish-white shell measures 10.2 mm and is one of the largest in this genus. It is very thin, broadly conic, umbilicated. It is marked by subobsolete, subequal, and subequally spaced spiral wrinkles, about fifteen of which may be seen on the body and base of the body whorlBody whorl
Body whorl is part of the morphology of a coiled gastropod mollusk.- In gastropods :In gastropods, the body whorl, or last whorl, is the most recently-formed and largest whorl of a spiral or helical shell, terminating in the aperture...
. In addition to these wrinkles, many faint, closely placed spiral and vertical grooves are present. The nuclear whorls
Whorl (mollusc)
A whorl is a single, complete 360° revolution or turn in the spiral growth of a mollusc shell. A spiral configuration of the shell is found in of numerous gastropods, but it is also found in shelled cephalopods including Nautilus, Spirula and the large extinct subclass of cephalopods known as the...
are small, numbering about two and one-half. They form a depressed spire
Spire (mollusc)
A spire is a descriptive term for part of the coiled shell of mollusks. The word is a convenient aid in describing shells, but it does not refer to a very precise part of shell anatomy: the spire consists of all of the whorls except for the body whorl...
, the axis of which is almost at right angles to the axis of the latter whorls. The six post-nuclear whorls are very wide, inflated, well rounded, faintly shouldered at the summit. The sutures are well marked and simple. The periphery and the base of the body whorl are inflated, well rounded, the latter decidedly contracted and narrowly umbilicated. The aperture
Aperture (mollusc)
The aperture is an opening in certain kinds of mollusc shells: it is the main opening of the shell, where part of the body of the animal emerges for locomotion, feeding, etc....
is large, suboval, somewhat effuse anteriorly. The posterior angle is obtuse. The outer lip
Lip (gastropod)
In the shell of a gastropod mollusk , the margin of the aperture is called the lip or the peristome. In other words, this is a term used to describe part of gastropod shell anatomy....
is thin. The columella is straight, obliquely inserted, revolute, not re-enforced by the base, with an oblique weak fold near its insertion. The parietal wall is apparently without a callus.
Distribution
This species occurs in the Pacific Ocean between British ColumbiaBritish Columbia
British Columbia is the westernmost of Canada's provinces and is known for its natural beauty, as reflected in its Latin motto, Splendor sine occasu . Its name was chosen by Queen Victoria in 1858...
and Puget Sound
Puget Sound
Puget Sound is a sound in the U.S. state of Washington. It is a complex estuarine system of interconnected marine waterways and basins, with one major and one minor connection to the Strait of Juan de Fuca and the Pacific Ocean — Admiralty Inlet being the major connection and...
, Washington.