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Tachylasma
Taxonomy
Tachylasma was named by Grabau (1922) [Sepkoski's age data: P Leon P Dora Sepkoski's reference number: 893]. It is not extant. It is the type genus of Tachylasmatidae.
It was assigned to Tachylasmatinae by Hill (1956); to Pentaphyllinae by Hill (1981); to Rugosa by Sepkoski (2002); and to Tachylasmatidae by Fedorowski (2021).
It was assigned to Tachylasmatinae by Hill (1956); to Pentaphyllinae by Hill (1981); to Rugosa by Sepkoski (2002); and to Tachylasmatidae by Fedorowski (2021).
Species
T. beyrichi, T. breviseptatum, T. gracile, T. irregulare, T. irregulare, T. jiangsuense, T. laibinensis, T. lhazeensis, T. magnum, T. paradoxicum, T. pseudocha, T. qianggongense, T. rariseptatum, T. regulare, T. stereoseptatum, T. tenuiseptatus, T. timorense, T. variabilis, T. xiukangensis, T. yiduense
Species lacking formal opinion data
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1922 | Tachylasma Grabau |
| 1940 | Tachyelasma Lang et al. |
| 1942 | Prionophyllum Schindewolf |
| 1956 | Tachylasma Hill |
| 1981 | Tachylasma Hill |
| 2002 | Tachylasma Sepkoski |
| 2021 | Tachylasma Fedorowski p. 429 |
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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.
G. †Tachylasma Grabau 1922
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†Tachylasma beyrichi Rothpletz 1892
†Tachylasma breviseptatum Yan and Chen 1982
†Tachylasma gracile Schindewolf 1940
†Tachylasma irregulare Yu et al. 1981
†Tachylasma irregulare Flügel 1973
†Tachylasma jiangsuense Chen and Yan 1982
†Tachylasma laibinensis Wang and Zhao 1998
†Tachylasma lhazeensis Lin 1984
†Tachylasma magnum Grabau 1928
†Tachylasma paradoxicum Wu 1975
†Tachylasma pseudocha Guo 1976
†Tachylasma qianggongense Lin 1984
†Tachylasma rariseptatum Yan and Chen 1982
†Tachylasma regulare Xu 1977
†Tachylasma stereoseptatum Wu 1975
†Tachylasma tenuiseptatus Lin 1984
†Tachylasma timorense Gerth 1922
†Tachylasma variabilis Soshkina 1941
†Tachylasma xiukangensis Lin 1984
†Tachylasma yiduense Xu 1977
Invalid names: Prionophyllum Schindewolf 1942 [synonym], Tachyelasma Lang et al. 1940 [synonym]
Diagnosis
No diagnoses are available