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Schistoceras
Taxonomy
Schistoceras was named by Hyatt (1884) [Sepkoski's age data: C Step-l C Step-u]. It is not extant.
It was assigned to Goniatitida by Sepkoski (2002); and to Schistoceratidae by Korn (2006), Furnish et al. (2009).
It was assigned to Goniatitida by Sepkoski (2002); and to Schistoceratidae by Korn (2006), Furnish et al. (2009).
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1884 | Schistoceras Hyatt |
| 1937 | Metaschistoceras Plummer and Scott p. 255 |
| 2002 | Schistoceras Sepkoski |
| 2006 | Schistoceras Korn |
| 2009 | Schistoceras Furnish et al. p. 108 |
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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. †Schistoceras Hyatt 1884
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†Schistoceras missouriense Miller and Faber 1892
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Invalid names: Goniatites fultonensis Miller and Gurley 1896 [synonym], Metaschistoceras heilprini Plummer and Scott 1937 [synonym], Schistoceras diversecostatum Böse 1919 [synonym], Schistoceras hyatti Smith 1903 [synonym], Schistoceras smithi Böse 1919 [synonym]
†Schistoceras suburalense Ruzhentsev 1950
†Schistoceras unicum Miller and Owen 1937
†Schistoceras uralense Ruzhentsev 1939
Invalid names: Metaschistoceras Plummer and Scott 1937 [synonym]
Diagnosis
No diagnoses are available
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| shell height | 13 | 20.7 | 1.80 | 57.0 | 24.8 | 17.4 | |
| shell diameter | 13 | 42.0 | 4.20 | 110.0 | 50.0 | 33.1 | |
| shell inflation | 13 | 8.41 | 1.10 | 21.1 | 9.00 | 5.92 |
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| Source: o = order, c = class | |||||
| References: Kiessling 2004, Kiessling 2003 | |||||
Age range: base of the Missourian to the top of the Artinskian or 306.00000 to 283.30000 Ma
Collections (57 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Kasimovian | USA (Texas) | S. smithi (128580 131119) | |
| Kasimovian | USA (Oklahoma) | S. unicum (170338) | |
| Missourian | USA (Oklahoma) | S. sp. (275964) | |
| Missourian | USA (Ohio) | S. sp. (175212) | |
| Missourian | USA (Texas) | S. missouriense (159900) | |
| Gzhelian | USA (Texas) | S. diversecostatum (128583 128585 128645) S. hyatti (43455 43476 43483 43484 43485) S. missouriense (128584 128678 131324 131325 131326) S. sp. (43486 43488 43490) | |
| Gzhelian | Russian Federation | S. suburalense (172254) S. uralense (172259 172260) | |
| Gzhelian | Kazakhstan | S. uralense (172279) | |
| Virgilian | USA (Kansas) | S. sp. (44351) | |
| Virgilian | USA (Texas) | S. missouriense (217891 217893 217894 217897 217901 217905 217906 217908 217913 217915 217921 217927 217929 217932 217952 217958 217960 217979 217986 217992 218010 218014 218017 218019 218024 218029 219193) S. sp. (220414) | |
| Asselian | USA (Texas) | S. sp. (43482) | |
| Artinskian | USA (Texas) | Metaschistoceras heilprini (110988) |