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Strophostylus
Taxonomy
Strophostylus was named by Hall (1859) [Sepkoski's age data: O Cara-m C Mosc Sepkoski's reference number: 362,797]. Its type is Strophostylus andrewsi.
It was reranked as Platyceras (Strophostylus) by Barrois (1889).
It was assigned to Platyceras by Barrois (1889); to Trochonematidae by Ulrich and Scofield (1897); to Strophostylidae by Grabau and Shimer (1909); to Archaeogastropoda by Sepkoski (2002); and to Platyceratidae by Knight et al. (1960), Bouchet et al. (2005).
It was reranked as Platyceras (Strophostylus) by Barrois (1889).
It was assigned to Platyceras by Barrois (1889); to Trochonematidae by Ulrich and Scofield (1897); to Strophostylidae by Grabau and Shimer (1909); to Archaeogastropoda by Sepkoski (2002); and to Platyceratidae by Knight et al. (1960), Bouchet et al. (2005).
Species
S. andrewsi (type species), S. bivolve, S. cancellata (syn. Cyclonema (Cyclonemina) contexta), S. chesterensis, S. cyclostomus, S. elegans, S. elevatus, S. fitchi, S. fortuitus, S. girtyi, S. globosus, S. matheri, S. nevadensis, S. obtusus, S. sargalensis, S. tantillus, S. transversus, S. unicus, S. wortheni
Species lacking formal opinion data
Entered
by J. Sepkoski on 2003-01-23; modified by P. Wagner on 2013-10-27
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1859 | Strophostylus Hall p. 21 |
| 1889 | Platyceras (Strophostylus) Barrois p. 205 |
| 1897 | Strophostylus Ulrich and Scofield |
| 1909 | Strophostylus Grabau and Shimer p. 676 |
| 1934 | Helictostylus Knight |
| 1960 | Strophostylus Knight et al. p. 242 |
| 2002 | Strophostylus Sepkoski |
| 2005 | Strophostylus Bouchet et al. p. 246 |
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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. †Strophostylus Hall 1859
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†Strophostylus andrewsi Hall 1859
†Strophostylus bivolve White and Whitfield 1862
†Strophostylus cancellata Hall 1847
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Invalid names: Cyclonema (Cyclonemina) contexta Perner 1903 [synonym]
†Strophostylus chesterensis Thein and Nitecki 1974
†Strophostylus cyclostomus Hall 1864
†Strophostylus elegans Hall 1859
†Strophostylus elevatus Hall 1868
†Strophostylus fitchi Hall 1859
†Strophostylus fortuitus Mazaev 2019
†Strophostylus girtyi Knight 1934
†Strophostylus globosus Hall 1859
†Strophostylus matheri Hall 1859
†Strophostylus nevadensis Gordon and Yochelson 1983
†Strophostylus obtusus Hall 1859
†Strophostylus sargalensis Reed 1944
†Strophostylus tantillus Gordon and Yochelson 1983
†Strophostylus transversus Hall 1859
†Strophostylus unicus Hall 1862
†Strophostylus wortheni Weller 1916
Invalid names: Helictostylus Knight 1934 [objective synonym]
Diagnosis
No diagnoses are available
Measurements
| part | N | mean | |||||
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| shell height | 1 | 42.0 |
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| Source: g = genus, f = family, superf = superfamily, c = class | |||||
| References: Knight et al. 1960, Batten 1984, Kiessling 2004, Hendy 2009 | |||||
Age range: base of the Rhuddanian to the top of the Wuchiapingian or 443.10000 to 254.14000 Ma
Collections (53 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Rhuddanian | Canada (Ontario) | S. cancellatus (173185) S. sp. (173184) | |
| Llandovery | USA (New York) | S. sp. (443 451 452 462) | |
| Aeronian | USA (New York) | S. cancellatus (81892) | |
| Niagaran | USA (Ohio) | S. sp. (475) | |
| Telychian | USA (New York) | S. cancellatus (77053 81871 83096) | |
| Sheinwoodian | USA (Wisconsin) | Cyclonema elevata (13069 13075) | |
| Sheinwoodian | USA (New York) | S. cancellatus (82597) | |
| Sheinwoodian | USA (Indiana) | S. cyclostomus (10712) | |
| Wenlock | USA (New York) | S. sp. (541) | |
| Wenlock | USA (Indiana) | S. cyclostomus (26778 26787 26789 26792 26794) | |
| Wenlock | USA (Tennessee) | S. cyclostomus (26788 26802) | |
| Wenlock - Silurian | USA (Wisconsin) | Cyclonema elevata (13104) | |
| Gorstian | Czechia (Praha) | Cyclonema contexta (154950) | |
| Ludlow | Czechia | Cyclonema contexta (144741) | |
| Lochkovian | Morocco | S. sp. (13935) | |
| Lochkovian | USA (New York) | S. fitchi (76851) S. rotundata, S. fitchi (156989) | |
| Lochkovian | USA (Maine) | S. globosus (103297) | |
| Helderbergian | Italy | S. sp. (26206) | |
| Emsian | France | Platyceras naticopsis, Platyceras giebeli (154581) | |
| Middle Devonian | USA (Alaska) | S. sp. (111920) | |
| Famennian | USA (Iowa) | S. bivolve (146537) | |
| Tournaisian | USA (Iowa) | S. bivolve (3309) | |
| Carboniferous | USA (Arizona) | S. splendens (124253) | |
| Brigantian | USA (Alabama) | S. sp. (6764) | |
| Chesterian | USA (Kentucky) | S. chesterensis, S. wortheni (59823) | |
| Chesterian | USA (Illinois) | Naticopsis wortheni (68188) S. wortheni (58998 59826) | |
| Pendleian | USA (Nevada) | S. nevadensis, S. tantillus (5526) S. tantillus (5523 5525) | |
| Serpukhovian | USA (Oklahoma) | S. sp. A (5611) | |
| Arnsbergian | USA (Wyoming) | S. sp. C Branson 1937 (69459) | |
| Morrowan | USA (Arizona) | S. sp. (42707) | |
| Kashirian - Myachkovian | USA (New Mexico) | S. girtyi (46548) | |
| Desmoinesian | USA (New Mexico) | S. girtyi (46536) | |
| Missourian | USA (Kansas) | Helictostylus girtyi (160138) | |
| Asselian | Russian Federation (Bashkortostan) | S. fortuitus (202159) | |
| Wordian | Pakistan | S. sargalensis (125805) | |
| Wuchiapingian | USA (Wyoming) | S. sp. (236341) |