Bivalvia - Pholadomyida - Megadesmidae

Alternative combinations: Megadesmus laevis, Pachydomus laevis, Pachydomus levis

Synonyms: Maeonia elliptica Dana 1847, Megadesmus antiquatus Sowerby 1838, Megadesmus cuneatus Sowerby 1838, Pachydomus antiquatus Sowerby 1838, Pachydomus cuneatus Sowerby 1838, Pyramus ellipticus Dana 1847

Full reference: J. d. C. Sowerby. 1838. Fossils. Three Expeditions into the Interior of Eastern Australia 1:14-15

Belongs to Pyramus according to M. J. Clarke 1992

See also Dana 1847, Dana 1849, Morris 1845, Runnegar 1967, Sowerby 1838 and Waterhouse 1988

Sister taxa: Pyramus aenigmaeformis, Pyramus concentricus, Pyramus igori, Pyramus myiformis, Pyramus myriformis, Pyramus nelliae, Pyramus permianus, Pyramus planus, Pyramus primigenius, Pyramus silicius, Pyramus simmetricus

Type specimens:

• Pyramus laevis: BMNH L61050. Its type locality is Harper's Hill, Hunter Valley (Mitchell coll), which is in a Sakmarian coastal sandstone in the Allandale Formation of Australia.
• Megadesmus antiquatus: BMNH PL 683. Its type locality is Harper's Hill, Hunter Valley (Mitchell coll), which is in a Sakmarian coastal sandstone in the Allandale Formation of Australia.
• Megadesmus cuneatus: BMNH PL 682. Its type locality is Harper's Hill, Hunter Valley (Mitchell coll), which is in a Sakmarian coastal sandstone in the Allandale Formation of Australia.
• Pyramus ellipticus: USNM 3583. Its type locality is Harper's Hill, Hunter Valley (USNM coll), which is in a Sakmarian marine limestone in the Allandale Formation of Australia.

Distribution:

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Specimen images are retrieved through the ePANDDA API.