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Acrilla (Ferminoscala) berthiaumei

Gastropoda - Epitoniidae

Taxonomy
Acrilla (Ferminoscala) berthiaumei was named by Durham (1937). Its type specimen is UCMP 31083 and is a 3D body fossil.

Sister species lacking formal opinion data
Epitonium paytens

Synonymy list
YearName and author
1937Acrilla (Ferminoscala) berthiaumei Durham p. 507 figs. Plate 57, figure 23

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Protostomia
—Spiralia
superphylumLophotrochozoa
phylumMollusca
RankNameAuthor
classGastropoda
subclassCaenogastropoda(Cox 1959)
superfamilyEpitonioidea(Berry 1910)
familyEpitoniidaeBerry 1910
genusAcrillaConrad 1865
subgenusFerminoscala
speciesberthiaumei

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.

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Diagnosis
ReferenceDiagnosis
J. W. Durham 1937Holotype small, incomplete; paratype large, only one whorl; complete shell probably of 9 or 10 whorls; thin; whorls convex; sutures moderately deep; 20 varices on largest whorl of holotype, about 30 on paratype, which is a body whorl; varices not as prominent as spiral ribs, of which there are five to six prominent primaries, equal in width to their interspaces; faint evidence of two very fine secondaries in interspaces; basal keel moderately prominent, below which are about 9 or 10 spiral ribs, a little wider than their interspaces; aperture ovate, inner lip reduced to a very thin band of callus
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: Beu et al. 1990, Kiessling 2004

Age range: base of the Paleocene to the top of the Priabonian or 66.00000 to 33.90000 Ma

Collections (5 total)


Time interval Ma Country or state Original ID and collection number
Paleocene66.0 - 56.0USA (California) Acrilla berthiaumei (190776)
Bartonian41.03 - 37.71USA (Washington) Acrilla berthiaumei (52204 52205 52206)
Priabonian37.71 - 33.9USA (Washington) Acrilla berthiaumei (202067)