Basic info Taxonomic history Classification Included Taxa
Morphology Ecology and taphonomy External Literature Search Age range and collections

Acirsa (Hemiacirsa) gracilior

Gastropoda - Epitoniidae

Taxonomy
Scalaria gracilior was named by Meyer (1886) [DISTRIBUTION: Middle Eocene; Gulf Coastal Plain.]. Its type specimen is USNM 638816, a shell, and it is not a trace fossil.

It was recombined as Acirsa (Hemiacirsa) gracilior by Palmer and Brann (1966).

Sister species lacking formal opinion data
A. kelseyi, A. solumcostata, A. duvergieri, A. ofunatoensis

Synonymy list
YearName and author
1886Scalaria gracilior Meyer p. 67 figs. pl. 2, fig. 2
1966Acirsa (Hemiacirsa) gracilior Palmer and Brann p. 475

Is something missing? Join the Paleobiology Database and enter the data

RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Protostomia
—Spiralia
superphylumLophotrochozoa
phylumMollusca
RankNameAuthor
classGastropoda
subclassCaenogastropoda(Cox 1959)
superfamilyEpitonioidea(Berry 1910)
familyEpitoniidaeBerry 1910
genusAcirsaMörch 1857
subgenusHemiacirsa(de Boury 1890)
speciesgracilior(Meyer 1886)

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.

show all | hide all
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: Beu et al. 1990, Kiessling 2004

Age range: Bartonian or 41.03000 to 37.71000 Ma

Collections (5 total)


Time interval Ma Country or state Original ID and collection number
Bartonian41.03 - 37.71USA (Alabama) Acirsa gracilior (90600)
Bartonian41.03 - 37.71USA (Texas) Acirsa gracilior (205410 205422 205433 205480)