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Orodromeus
Taxonomy
Orodromeus was named by Horner and Weishampel (1988). It is the type genus of Orodrominae.
It was assigned to Hypsilophodontia by Norman (1989); to Ornithopoda by Butler et al. (2007); to Euornithopoda by Norman et al. (2004) and Galton (2009); to Ornithopoda by Buchholz (2002), Butler et al. (2008) and Han et al. (2012); to Hypsilophodontidae by Horner and Weishampel (1988), Sues and Norman (1990), Weishampel and Heinrich (1992), Carpenter (1994), Sues (1997), Horner (1997), Dodson (1997), Winkler et al. (1997), Eberth et al. (2001), Longrich (2008) and Alifanov and Saveliev (2014); to Thescelosauridae by Herne et al. (2019); and to Orodrominae by Brown et al. (2013), Madzia et al. (2018) and Dieudonné et al. (2020).
It was assigned to Hypsilophodontia by Norman (1989); to Ornithopoda by Butler et al. (2007); to Euornithopoda by Norman et al. (2004) and Galton (2009); to Ornithopoda by Buchholz (2002), Butler et al. (2008) and Han et al. (2012); to Hypsilophodontidae by Horner and Weishampel (1988), Sues and Norman (1990), Weishampel and Heinrich (1992), Carpenter (1994), Sues (1997), Horner (1997), Dodson (1997), Winkler et al. (1997), Eberth et al. (2001), Longrich (2008) and Alifanov and Saveliev (2014); to Thescelosauridae by Herne et al. (2019); and to Orodrominae by Brown et al. (2013), Madzia et al. (2018) and Dieudonné et al. (2020).
Species
Synonymy list
| Year | Name and author |
|---|---|
| 1988 | Orodromeus Horner and Weishampel |
| 1989 | Orodromeus Norman p. 65 |
| 1990 | Orodromeus Sues and Norman p. 500 |
| 1992 | Orodromeus Weishampel and Heinrich p. 163 |
| 1994 | Orodromeus Carpenter p. 290 |
| 1997 | Orodromeus Dodson p. 12 |
| 1997 | Orodromeus Horner p. 205 |
| 1997 | Orodromeus Sues p. 357 |
| 1997 | Orodromeus Winkler et al. p. 345 fig. 19 |
| 2001 | Orodromeus Eberth et al. p. 57 |
| 2002 | Orodromeus Buchholz p. 21 |
| 2004 | Orodromeus Norman et al. p. 395 |
| 2007 | Orodromeus Butler et al. p. S18 fig. S2 |
| 2008 | Orodromeus Butler et al. p. 21 figs. 2-4 |
| 2008 | Orodromeus Longrich p. 994 |
| 2009 | Orodromeus Galton p. 214 |
| 2012 | Orodromeus Han et al. p. 1391 fig. 14 |
| 2013 | Orodromeus Brown et al. p. 512 |
| 2014 | Orodromeus Alifanov and Saveliev p. 419 |
| 2018 | Orodromeus Madzia et al. p. 973 fig. 4 |
| 2019 | Orodromeus Herne et al. p. 574 fig. 25 |
| 2020 | Orodromeus Dieudonné et al. |
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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. †Orodromeus Horner and Weishampel 1988
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†Orodromeus makelai Horner and Weishampel 1988
Diagnosis
No diagnoses are available
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| femur diameter | 3 | 6.12 | 1.50 | 17.0 | 9.00 | 7.75 | |
| tibia diameter | 4 | 9.87 | 6.00 | 16.0 | 10.0 | 4.20 |
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| Source: g = genus, subo = suborder, o = order | |||||
| References: Peczkis 1995, Benton 1983, Marsh 1875 | |||||
Age range: base of the Middle Campanian to the top of the Late/Upper Maastrichtian or 83.50000 to 66.00000 Ma
Collections (9 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Late/Upper Santonian - Early/Lower Campanian | USA (Montana) | O. sp. (53058) | |
| Campanian | USA (Montana) | Hypsilophodontidae indet. (13281 22653) O. makelai (22690 53043) | |
| Judithian | USA (Montana) | O. makelai (14453) | |
| Middle Campanian | USA (Montana) | O. sp. (25658) | |
| Middle Campanian - Late/Upper Campanian | USA (Montana) | Thescelosaurus neglectus (14446) | |
| Late/Upper Maastrichtian | USA (Montana) | Thescelosaurus neglectus (13142) |