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Edmondia suborbiculata

Bivalvia - Pholadomyida - Edmondiidae

Taxonomy
Edmondia crassa suborbiculata was named by Girty (1911). It is a 3D body fossil.

It was recombined as Edmondia suborbiculata by Busanus and Hoare (1991).

Synonymy list
YearName and author
1911Edmondia crassa suborbiculata Girty p. 82 figs. pl. 12 f. 9
1991Edmondia suborbiculata Busanus and Hoare p. 474 fig. 5.12

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Protostomia
Spiralia
superphylumLophotrochozoa
phylumMollusca
classBivalvia
Eubivalvia
subclassAutobranchia(Groblen 1894)
RankNameAuthor
infraclassHeteroconchia(Cox 1960)
CardiomorphiFerussac 1822
CardioniFerussac 1822
CardiidiaFerussac 1822
PoromyataRidewood 1903
orderPholadomyida()
superfamilyEdmondioidea()
familyEdmondiidae
genusEdmondia
speciessuborbiculata()

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.

Diagnosis
ReferenceDiagnosis
J. W. Busanus and R. D. Hoare 1991Edmondia with coarse comarginal ridges; length and height nearly equal; curvature of margins forming a subcircular outline. Specimens are too incomplete for diagnostic measurements.

Girty (1911), in describing Edmondia crassa from the Moorefield Shale in Arkansas, noted the variation in shape of the specimens and tentatively proposed the name suborbiculata for the subcircular form. Specimens from the Reynolds Limestone agree closely with this form. The shape is distinctive.