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Ectocycloceras
Taxonomy
Ectocycloceras was named by Ulrich and Foerste (1936) [Sepkoski's age data: O Aren-l Sepkoski's reference number: 524]. Its type is Orthoceras cataline.
It was assigned to Protocycloceratidae by Teichert et al. (1964) and Crick (1981); to Ellesmerocerida by Sepkoski (2002); and to Rudolfoceratidae by Ulrich et al. (1944) and Evans (2011).
It was assigned to Protocycloceratidae by Teichert et al. (1964) and Crick (1981); to Ellesmerocerida by Sepkoski (2002); and to Rudolfoceratidae by Ulrich et al. (1944) and Evans (2011).
Species
Synonymy list
| Year | Name and author |
|---|---|
| 1936 | Ectocycloceras Ulrich and Foerste p. 275 |
| 1944 | Ectocycloceras Ulrich et al. |
| 1964 | Ectocycloceras Teichert et al. p. 152 |
| 1981 | Ectocycloceras Crick p. 227 |
| 2002 | Ectocycloceras Sepkoski |
| 2011 | Ectocycloceras 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. †Ectocycloceras Ulrich and Foerste 1936
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†Ectocycloceras cataline Billings 1865
†Ectocycloceras cato Billings 1865
†Ectocycloceras levisense Ulrich et al. 1944
Diagnosis
No diagnoses are available