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Strepsodiscus
Taxonomy
Strepsodiscus was named by Knight (1948). Its type is Strepsodiscus major.
It was assigned to Cyrtolitidae by Knight et al. (1960); to Sinuitinae by Horný (1963); to Sinuitidae by Runnegar and Jell (1976); to Tropidodiscidae by Wagner (1999); to Bellerophontina by Sepkoski (2002); and to Temnodiscinae by Wagner (2023).
It was assigned to Cyrtolitidae by Knight et al. (1960); to Sinuitinae by Horný (1963); to Sinuitidae by Runnegar and Jell (1976); to Tropidodiscidae by Wagner (1999); to Bellerophontina by Sepkoski (2002); and to Temnodiscinae by Wagner (2023).
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1948 | Chalarostrepsis Knight |
| 1948 | Strepsodiscus Knight |
| 1960 | Strepsodiscus Knight et al. p. I174 |
| 1960 | Chalarostrepsis Knight et al. p. 179 |
| 1963 | Strepsodiscus Horný |
| 1976 | Chalarostrepsis Runnegar and Jell p. 122 |
| 1976 | Strepsodiscus Runnegar and Jell p. 134 |
| 1999 | Strepsodiscus Wagner |
| 2002 | Chalarostrepsis Sepkoski |
| 2002 | Streptodiscus Sepkoski |
| 2023 | Strepsodiscus Wagner p. G621 |
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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. †Strepsodiscus Knight 1948
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†Strepsodiscus austrinus Pinilla et al. 2008
†Strepsodiscus franconiensis Berkey 1898
†Strepsodiscus hoyti Walcott 1890
†Strepsodiscus major Knight 1948
†Strepsodiscus minutissimus Walcott 1879
†Strepsodiscus pagoda Walcott 1905
†Strepsodiscus paucivoluta Calvin 1892
†Strepsodiscus praecursor Knight 1948
†Strepsodiscus shinetonensis Callaway 1877
†Strepsodiscus splettstoesseri Webers et al. 1992
†Strepsodiscus strongi Whitfield 1878
Invalid names: Chalarostrepsis Knight 1948 [synonym]
Diagnosis
No diagnoses are available
Measurements
| part | N | mean | |||||
|---|---|---|---|---|---|---|---|
| height | 1 | 7.00 |
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| Source: g = genus, o = order, c = class | |||||
| References: Kiessling 2004, Hendy 2009 | |||||
Age range: base of the Steptoean to the top of the Migneintian or 497.00000 to 477.10000 Ma
Collections (18 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Steptoean | USA (Minnesota) | Euomphalus strongi, Hypseloconus franconiensis (156300) | |
| Dresbachian | Antarctica (Elsemere Island) | Euomphalus splettstoesseri (99793 99795) | |
| Dresbachian | USA (Missouri) | S. major (9625 158316) | |
| Franconian | USA (Colorado) | S. major (56818) | |
| Furongian | China (Shandong) | Pelagiella pagoda (157404) | |
| Furongian | Argentina | S. austrinus (85006 85007) | |
| Sunwaptan | Canada (Quebec) | Chalarostrepsis praecursor (56819) | |
| Trempealeauan | USA (New York) | Pelagiella hoyti (74540) | |
| Trempealeauan | USA (Missouri) | S. paucivoluta (8232 8695) | |
| Gasconadian | USA (Texas) | Pelagiella paucivoluta (56498 56500) | |
| Gasconadian | USA (Missouri) | S. major (64584) | |
| Cressagian | United Kingdom (England) | Bellerophon shinetonensis (3711) | |
| Migneintian | United Kingdom (England) | Bellerophon shinetonensis (3710) |