PBDB Taxon

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Morphology	Ecology and taphonomy	External Literature Search	Age range and collections

Acrilla (Undiscala) washingtonensis

Gastropoda - Epitoniidae

Taxonomy

Epitonium washingtonensis was named by Weaver (1916). Its type specimen is CAS 557, a shell, and it is a 3D body fossil. Its type locality is Galvin Station, which is in a Chattian offshore sandstone in the Lincoln Creek Formation of Washington.

It was recombined as Acrilla (Undiscala) washingtonensis by Durham (1937).

Sister species lacking formal opinion data

A. bronni, A. bruennichi, A. decussata, A. elegans, A. fenestrata, A. gryi, A. interposita, A. reticulata, A. subreticulata, Amaea bronni, Amaea decussata, Amaea grignonensis, Amaea perangusta, Epitonium paytens, Undiscala goryi, Undiscala vicina

Synonymy list

Year	Name and author
1916	Epitonium washingtonensis Weaver pp. 30, 43 figs. pl. 4, figs. 46, 49
1937	Acrilla (Undiscala) washingtonensis Durham p. 510 figs. Plate 56, figure 18

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Rank	Name	Author
kingdom	Animalia	()
—	Bilateria
—	Eubilateria	Ax 1987
—	Protostomia
—	Spiralia
superphylum	Lophotrochozoa
phylum	Mollusca

Rank	Name	Author
class	Gastropoda
subclass	Caenogastropoda	(Cox 1959)
superfamily	Epitonioidea	(Berry 1910)
family	Epitoniidae	Berry 1910
genus	Acrilla	Adams and Adams 1853
subgenus	Undiscala	(de Boury 1909)
species	washingtonensis	()

If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.

†Acrilla (Undiscala) washingtonensis Weaver 1916

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Diagnosis

No diagnoses are available

Measurements

No measurements are available

Composition:

aragonitef

Composition 2:

low Mg calcitef

Locomotion:

slow-movingf

Life habit:

low-level epifaunalf

Diet:

carnivoref

Vision:

limitedc

Created:

2007-02-05 23:13:43

Modified:

2011-09-22 17:20:39

Source: f = family, c = class

References: Kiessling 2004, Beu et al. 1990

Age range: base of the Bartonian to the top of the Chattian or 41.03000 to 23.04000 Ma

Collections (2 total)

Time interval	Ma	Country or state	Original ID and collection number
Bartonian	41.03 - 37.71	USA (Washington)	Epitonium washingtonensis (200105)
Chattian	27.3 - 23.04	USA (Washington)	Epitonium washingtonensis, Acrilla washingtonensis (type locality: 52380)