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| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Einiosaurus
Taxonomy
Einiosaurus was named by Sampson (1994). It is not extant.
It was assigned to Chasmosaurinae by Farke (2011); to Centrosaurinae by Sampson (1994), Sampson (1995), Dodson (1997), Horner et al. (2001), Dodson et al. (2004), Ryan and Russell (2005), Ryan (2007), Longrich (2010), McDonald and Horner (2010), Xu et al. (2010), McDonald (2011), Farke et al. (2011) and Evans and Ryan (2015); and to Pachyrhinosaurini by Fiorillo and Tykoski (2012) and Ryan et al. (2017).
It was assigned to Chasmosaurinae by Farke (2011); to Centrosaurinae by Sampson (1994), Sampson (1995), Dodson (1997), Horner et al. (2001), Dodson et al. (2004), Ryan and Russell (2005), Ryan (2007), Longrich (2010), McDonald and Horner (2010), Xu et al. (2010), McDonald (2011), Farke et al. (2011) and Evans and Ryan (2015); and to Pachyrhinosaurini by Fiorillo and Tykoski (2012) and Ryan et al. (2017).
Synonymy list
| Year | Name and author |
|---|---|
| 1994 | Einiosaurus Sampson p. 44A |
| 1995 | Einiosaurus Sampson |
| 1997 | Einiosaurus Dodson p. 476 |
| 2001 | Einiosaurus Horner et al. p. 9 |
| 2004 | Einiosaurus Dodson et al. p. 495 |
| 2005 | Einiosaurus Ryan and Russell pp. 1381-3 fig. 10 |
| 2007 | Einiosaurus Ryan p. 391 fig. 12 |
| 2010 | Einiosaurus Longrich p. 692 fig. 10 |
| 2010 | Einiosaurus McDonald and Horner p. 160 fig. 10.5 |
| 2010 | Einiosaurus Xu et al. p. 1634 fig. 3 |
| 2011 | Einiosaurus Farke p. 7 |
| 2011 | Einiosaurus Farke et al. p. 699 |
| 2011 | Einiosaurus McDonald p. 9 |
| 2012 | Einiosaurus Fiorillo and Tykoski |
| 2015 | Einiosaurus Evans and Ryan |
| 2017 | Einiosaurus Ryan et al. p. 9 |
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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. †Einiosaurus Sampson 1994
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†Einiosaurus procurvicornis Sampson 1994
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Invalid names: Styracosaurus makeli Czerkas and Czerkas 1990 [replaced]
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: subo = suborder, o = order | |||||
| References: Norman and Weishampel 1991, Marsh 1875 | |||||
Age range: Late/Upper Campanian or 83.50000 to 70.60000 Ma
Collections (3 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Late/Upper Campanian | USA (Montana) | E. procurvicornis (59373) Styracosaurus sp. (22693 22694) |