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| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Syndyoceras
Taxonomy
Syndyoceras was named by Barbour (1905). It is not extant. Its type is Syndyoceras cooki.
It was assigned to Protoceratidae by Barbour (1905) and Carroll (1988); and to Kyptoceratini by Webb (1981), Prothero (1998), Webb et al. (2003) and Prothero and Ludtke (2007).
It was assigned to Protoceratidae by Barbour (1905) and Carroll (1988); and to Kyptoceratini by Webb (1981), Prothero (1998), Webb et al. (2003) and Prothero and Ludtke (2007).
Species
S. cooki (type species)
Synonymy list
| Year | Name and author |
|---|---|
| 1905 | Syndyoceras Barbour |
| 1981 | Syndyoceras Webb p. 362 |
| 1988 | Syndyoceras Carroll |
| 1998 | Syndyoceras Prothero p. 435 |
| 2003 | Syndyoceras Webb et al. p. 362 |
| 2007 | Syndyoceras Prothero and Ludtke p. 173 |
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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.
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: f = family, o = order, subc = subclass, c = class, subp = subphylum | |||||
| References: Hendy et al. 2009, Nowak 1999, Lillegraven 1979, Prothero 1998, Carroll 1988 | |||||
Age range: Harrisonian or 24.80000 to 18.50000 Ma
Collections (7 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Harrisonian | USA (Nebraska) | S. cooki (17738 17809 17843 17846 28043) S. sp. (17819) | |
| Harrisonian | USA (Wyoming) | S. cooki (17788) |