''Turris packardi'' is an extinct

species In biology, a species is the basic unit of Taxonomy (biology), classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of ...

of sea snail, a marine gastropod

mollusk Mollusca is the second-largest phylum of invertebrate animals after the Arthropoda, the members of which are known as molluscs or mollusks (). Around 85,000 extant species of molluscs are recognized. The number of fossil species is es ...

in the

family Family (from la, familia) is a group of people related either by consanguinity (by recognized birth) or affinity (by marriage or other relationship). The purpose of the family is to maintain the well-being of its members and of society. Idea ...

Turridae Turridae is a taxonomic family name for a number of predatory sea snails, marine gastropod mollusks in the superfamily Conoidea. MolluscaBase (2018). Turridae H. Adams & A. Adams, 1853 (1838). Accessed through: World Register of Marine Specie ...

, the turrids.Weaver (1916) - Tertiary faunal horizons of western Washington; Seattle, Wash, University of Washington
/ref>

Description

(Original description) The shell is small and fusiform. The

spire A spire is a tall, slender, pointed structure on top of a roof of a building or tower, especially at the summit of church steeples. A spire may have a square, circular, or polygonal plan, with a roughly conical or pyramidal shape. Spires are ...

is moderately elevated and about one and two-fifths as long as the

siphonal canal The siphonal canal is an anatomical feature of the shells of certain groups of sea snails within the clade Neogastropoda. Some sea marine gastropods have a soft tubular anterior extension of the mantle called a siphon through which water ...

; The shell contains eight, very angular

whorl A whorl ( or ) is an individual circle, oval, volution or equivalent in a whorled pattern, which consists of a spiral or multiple concentric objects (including circles, ovals and arcs). Whorls in nature File:Photograph and axial plane flo ...

s. A well developed keel is present upon the angulated area of each whorl. The surface of each whorl above the angle is very slightly concave and ornamented by very faint revolving lines. The middle portion of each whorl has two very prominent revolving cord-like ribs with very narrow groove like interspaces. The anterior surface of the body whorl is sculptured with 13 revolving ribs which are less well defined than those upon the middle portion. The interspaces on lyhe ower portion are very narrow. The lines of growth are quite prominent and conforming to the outline of the posterior sinus. The suture is distinct. The aperture is sub-pyriform. The siphonal canal has a moderate length and is deeply channeled.

Distribution

Fossils of this marine species were found in

Oligocene The Oligocene ( ) is a geologic epoch of the Paleogene Period and extends from about 33.9 million to 23 million years before the present ( to ). As with other older geologic periods, the rock beds that define the epoch are well identified but ...

strata in

Washington Washington commonly refers to: * Washington (state), United States * Washington, D.C., the capital of the United States ** A metonym for the federal government of the United States ** Washington metropolitan area, the metropolitan area centered o ...

, USA

References

{{DEFAULTSORT:Turris Packardi packardi Gastropods described in 1916