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Pyramus laevis
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).
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
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Synonymy list
| Year | Name and author |
|---|---|
| 1838 | Megadesmus antiquatus Sowerby p. 15 figs. Pl 3, fig 2 |
| 1838 | Megadesmus cuneatus Sowerby p. 15 figs. Pl 3, fig 3 |
| 1838 | Megadesmus laevis Sowerby p. 15 figs. Pl 3, fig 1 |
| 1845 | Pachydomus antiquatus Morris p. 272 |
| 1845 | Pachydomus cuneatus Morris p. 272 |
| 1845 | Pachydomus laevis Morris p. 272 |
| 1847 | Pyramus ellipticus Dana p. 157 |
| 1849 | Pachydomus antiquatus Dana p. 693 figs. Pl 5, fig 2 |
| 1849 | Pachydomus cuneatus Dana p. 693 figs. Pl 5, fig 1 |
| 1849 | Pachydomus levis Dana p. 694 |
| 1849 | Maeonia elliptica Dana p. 697 figs. Pl 6, fig 5 |
| 1967 | Pyramus laevis Runnegar p. 34 figs. Pl 1, figs 1-12; pl 2, figs 1-10 |
| 1988 | Pyramus 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 |
| 1992 | Pyramus laevis Clarke p. 30 figs. 17A-H, 18A,B |
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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.
†Pyramus laevis Sowerby 1838
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Invalid names: Megadesmus antiquatus Sowerby 1838 [synonym], Megadesmus cuneatus Sowerby 1838 [synonym], Pyramus ellipticus Dana 1847 [synonym]
Diagnosis
No diagnoses are available