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Liopistha (Psilomya) hardingensis

Bivalvia - Poromyida - Poromyidae

Taxonomy
Homomya hardingensis was named by Packard (1922). Its type specimen is UCMP 12291 and is a 3D body fossil. Its type locality is UCMP loc. 2134, Santa Ana Mountains, which is in a Turonian/Campanian marine horizon in the Ladd Formation of California.

It was recombined as Liopistha (Psilomya) hardingensis by Popenoe (1937).

Synonymy list
YearName and author
1922Homomya hardingensis Packard p. 423 figs. Plate 32, figures 1a and 1b
1937Liopistha (Psilomya) hardingensis Popenoe p. 383 figs. Plate 45, figure 8; Plate 46, figure 16

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Protostomia
—Spiralia
superphylumLophotrochozoa
phylumMollusca
classBivalvia
—Eubivalvia
subclassAutobranchia(Groblen 1894)
infraclassHeteroconchia(Gray 1854)
RankNameAuthor
—CardiomorphiFerussac 1822
—CardioniFerussac 1822
—CardiidiaFerussac 1822
—PoromyataRidewood 1903
orderPoromyida(Ridewood 1903)
superfamilyPoromyoidea(Dall 1886)
familyPoromyidaeDall 1886
genusLiopisthaMeek 1864
subgenusPsilomya(Meek 1876)
specieshardingensis()

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
E. L. Packard 1922Shell large, equivalve; inequilateral; posterior extremity elongated,
evenly rounded; anterior extremity broadly rounded. Umbones very tumid, the beaks being distant and markedly curved anteriorly . Shell ornamented on the umbones, at least, by fine, smooth, equidistant concentric ridges. Length of type, 100 mm.; height, about 75 mm. ; diameter, 70 mm.
Measurements
No measurements are available
Composition: aragonitec
Locomotion: facultatively mobilef
Life habit: infaunalf
Diet: carnivoref
Vision: blindc
Created: 2009-07-04 09:13:50
Modified: 2009-08-17 22:19:44
Source: f = family, c = class
References: Aberhan et al. 2004, Todd 2001

Age range: Turonian or 93.90000 to 89.80000 Ma

Collections (2 total)


Time interval Ma Country or state Original ID and collection number
Turonian93.9 - 89.8USA (California) Liopistha hardingensis (221082)
Late/Upper Turonian - Middle Campanian93.9 - 72.2USA (California) Homomya hardingensis (207814)