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Dyscritoceras
Taxonomy
Dyscritoceras was named by Ulrich and Foerste (1936) [Sepkoski's age data: O Aren Sepkoski's reference number: 298]. Its type is Cyrtoceras metellus.
It was assigned to Bassleroceratidae by Ulrich et al. (1944), Teichert et al. (1964) and Crick (1981); to Ellesmerocerida by Sepkoski (2002); and to Ellesmeroceratidae by Evans (2011).
It was assigned to Bassleroceratidae by Ulrich et al. (1944), Teichert et al. (1964) and Crick (1981); to Ellesmerocerida by Sepkoski (2002); and to Ellesmeroceratidae by Evans (2011).
Species
Synonymy list
| Year | Name and author |
|---|---|
| 1936 | Dyscritoceras Ulrich and Foerste p. 272 |
| 1944 | Dyscritoceras Ulrich et al. |
| 1964 | Dyscritoceras Teichert et al. p. 148 |
| 1981 | Dyscritoceras Crick p. 227 |
| 2002 | Dyscritoceras Sepkoski |
| 2011 | Dyscritoceras Evans |
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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. †Dyscritoceras Ulrich and Foerste 1936
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†Dyscritoceras dictys Billings 1865
†Dyscritoceras jeffersonensis Cullison 1944
†Dyscritoceras metellus Billings 1865
†Dyscritoceras oxfordense Ulrich et al. 1944
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: o = order, c = class | |||||
| References: Kiessling 2004, Aberhan et al. 2004 | |||||
Collections (6 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Stairsian | United Kingdom (Scotland) | D. sp. (188684 188685 188687) | |
| Cassinian | USA (Missouri) | D. jeffersonensis (56439) | |
| Cassinian | Canada (Quebec) | D. metellus, D. dictys (101017) | |
| Floian | Canada (Ontario) | D. oxfordense (101383) |