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Pyramus laevis

Bivalvia - Pholadomyida - Megadesmidae

Taxonomy
Megadesmus laevis was named by Sowerby (1838). Its type specimen is BMNH L61050 and is a 3D body fossil. Its type locality is Harper's Hill, Hunter Valley (Mitchell coll), which is in a Sakmarian coastal sandstone in the Allandale Formation of Australia.

It was recombined as Pachydomus laevis by Morris (1845); it was recombined as Pachydomus levis by Dana (1849); it was recombined as Pyramus laevis by Runnegar (1967), Waterhouse (1988) and Clarke (1992).

Synonyms
Synonymy list
YearName and author
1838Megadesmus antiquatus Sowerby p. 15 figs. Pl 3, fig 2
1838Megadesmus cuneatus Sowerby p. 15 figs. Pl 3, fig 3
1838Megadesmus laevis Sowerby p. 15 figs. Pl 3, fig 1
1845Pachydomus antiquatus Morris p. 272
1845Pachydomus cuneatus Morris p. 272
1845Pachydomus laevis Morris p. 272
1847Pyramus ellipticus Dana p. 157
1849Pachydomus antiquatus Dana p. 693 figs. Pl 5, fig 2
1849Pachydomus cuneatus Dana p. 693 figs. Pl 5, fig 1
1849Pachydomus levis Dana p. 694
1849Maeonia elliptica Dana p. 697 figs. Pl 6, fig 5
1967Pyramus laevis Runnegar p. 34 figs. Pl 1, figs 1-12; pl 2, figs 1-10
1988Pyramus laevis Waterhouse p. 187 figs. Pl 9, fig 6; pl 13, fig 4; pl 14, figs 2, 3; pl 15, figs 2, 4, 5, 7, 8; pl 16, fig 1; text-fig 1
1992Pyramus laevis Clarke p. 30 figs. 17A-H, 18A,B

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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()
familyMegadesmidaeVokes 1967
genusPyramus
specieslaevis()

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
No diagnoses are available