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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), Crick (1981); to Ellesmerocerida by Sepkoski (2002); and to Rudolfoceratidae by Ulrich et al. (1944), Evans (2011).
It was assigned to Protocycloceratidae by Teichert et al. (1964), Crick (1981); to Ellesmerocerida by Sepkoski (2002); and to Rudolfoceratidae by Ulrich et al. (1944), 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
Measurements
No measurements are available
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| Source: o = order, c = class | |||||
| References: Aberhan et al. 2004, Kiessling 2004 | |||||
Age range: Stairsian or 483.40000 to 481.70000 Ma
Collections (5 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Stairsian | United Kingdom (Scotland) | E. levisense (188685 188688) | |
| Stairsian | USA (New York) | Orthoceras cataline, Orthoceras cato (42799) | |
| Stairsian - Tulean | United Kingdom (Scotland) | E. levisense (188696) | |
| Cassinian | Canada (Quebec) | Rudolfoceras levisense (101017) |