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.
Ecology: facultatively mobile infaunal suspension feeder
Distribution:
• Permian of Australia (16 collections)
Total: 16 collections including 22 occurrences
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.