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Kosmoceratops
Taxonomy
Kosmoceratops was named by Sampson et al. (2010).
It was assigned to Chasmosaurinae by Sampson et al. (2010), Maidment and Barrett (2011), Longrich (2014).
It was assigned to Chasmosaurinae by Sampson et al. (2010), Maidment and Barrett (2011), Longrich (2014).
Species
Synonymy list
| Year | Name and author |
|---|---|
| 2010 | Kosmoceratops Sampson et al. p. 3 |
| 2011 | Kosmoceratops Maidment and Barrett p. 2 |
| 2014 | Kosmoceratops Longrich p. 298–299 |
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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. †Kosmoceratops Sampson et al. 2010
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†Kosmoceratops richardsoni Sampson et al. 2010
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| N. R. Longrich 2014 | Chasmosaurine ceratopsid exhibiting the following derived characters: premaxillary beak triangular, with rostral pointed and apex projecting anteroventrally; narial strut caudally inclined; narial process of premaxilla a triangular, posterodorsally projecting prong. Internal naris tall, narrow and posteriorly inclined. Nasal ornament posteriorly placed. Supraorbital horncores dorsolaterally directed and curving downwards. Lateral temporal fenestrae tall and narrow. Parietosquamosal frill short, with small parietal fenestrae. Squamosals strongly curved in lateral view and lateral margins parallel in dorsal view. Parietal does not project past squamosals; posterior margin V-shaped, with emargination spanning the whole width of the parietal. Squamosal epoccipitals increase in size posteriorly. Posterior margin of frill with ten hornlike, forward-curving epoccipitals with prominent sulci and representing p1ep3, an eps, and s1, epiparietals with bases coalesced. |
Measurements
No measurements are available
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| Source: subo = suborder, o = order | |||||
| References: Marsh 1875, Norman and Weishampel 1991 | |||||
Age range: Late/Upper Campanian or 83.60000 to 72.20000 Ma
Collections (2 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Late/Upper Campanian | USA (Utah) | Chasmosaurinae indet. (131868) K. richardsoni (97804) |