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Pachyrhinosaurus
Taxonomy
Pachyrhinosaurus was named by Sternberg (1950). Its type is Pachyrhinosaurus canadensis. It is the type genus of Pachyrhinosaurinae.
It was assigned to Pachyrhinosauridae by Sternberg (1950), Romer (1956), Parsch (1963), Tatarinov (1964), Kuhn (1964), Kuhn (1966), Romer (1966), Charig (1967), Russell and Chamney (1967) and Laub (1979); to Pachyrhinosaurinae by Huene (1950) and Olshevsky and Ford (1994); to Ceratopsidae by Langston (1967), Langston (1968), Swinton (1970), Langston (1976), Russell (1984), Ostrom and Wellnhofer (1986), Carroll (1988), Eberth (1997) and Longrich (2008); to Pachyrostra by Fiorillo and Tykoski (2012); to Centrosaurinae by Dodson and Currie (1990), Dodson (1990), Lehman (1990), Sampson (1994), Lehman (1996), Vickaryous and Ryan (1997), Dodson (1997), Sereno (1998), Dodson et al. (2004), Farke (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 Ryan et al. (2017).
It was assigned to Pachyrhinosauridae by Sternberg (1950), Romer (1956), Parsch (1963), Tatarinov (1964), Kuhn (1964), Kuhn (1966), Romer (1966), Charig (1967), Russell and Chamney (1967) and Laub (1979); to Pachyrhinosaurinae by Huene (1950) and Olshevsky and Ford (1994); to Ceratopsidae by Langston (1967), Langston (1968), Swinton (1970), Langston (1976), Russell (1984), Ostrom and Wellnhofer (1986), Carroll (1988), Eberth (1997) and Longrich (2008); to Pachyrostra by Fiorillo and Tykoski (2012); to Centrosaurinae by Dodson and Currie (1990), Dodson (1990), Lehman (1990), Sampson (1994), Lehman (1996), Vickaryous and Ryan (1997), Dodson (1997), Sereno (1998), Dodson et al. (2004), Farke (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 Ryan et al. (2017).
Species
Synonymy list
| Year | Name and author |
|---|---|
| 1950 | Pachyrhinosaurus Huene p. 351 |
| 1950 | Pachyrhinosaurus Sternberg p. 109 |
| 1956 | Pachyrhinosaurus Romer p. 639 |
| 1963 | Pachyrhinosaurus Parsch p. 8 |
| 1964 | Pachyrhinosaurus Kuhn p. 61 |
| 1964 | Pachyrhinosaurus Tatarinov p. 588 |
| 1966 | Pachyrhinosaurus Kuhn p. 107 |
| 1966 | Pachyrhinosaurus Romer p. 371 |
| 1967 | Pachyrhinosaurus Charig p. 717 |
| 1967 | Pachyrhinosaurus Langston p. 184 |
| 1967 | Pachyrhinosaurus Russell and Chamney p. 11 |
| 1968 | Pachyrhinosaurus Langston p. 1304 |
| 1970 | Pachyrhinosaurus Swinton p. 263 |
| 1976 | Pachyrhinosaurus Langston p. 126 |
| 1979 | Pachyrhinosaurus Laub p. 9 |
| 1984 | Pachyrhinosaurus Russell p. 25 |
| 1986 | Pachyrhinosaurus Ostrom and Wellnhofer p. 116 |
| 1988 | Pachyrhinosaurus Carroll |
| 1990 | Pachyrhinosaurus Dodson p. 241 fig. 17.1 |
| 1990 | Pachyrhinosaurus Dodson and Currie p. 611 |
| 1990 | Pachyrhinosaurus Lehman p. 212 |
| 1994 | Pachyrhinosaurus Olshevsky and Ford |
| 1994 | Pachyrhinosaurus Sampson p. 44A |
| 1996 | Pachyrhinosaurus Lehman p. 506 |
| 1997 | Pachyrhinosaurus Dodson p. 476 |
| 1997 | Pachyrhinosaurus Eberth p. 201 |
| 1997 | Pachyrhinosaurus Vickaryous and Ryan p. 492 |
| 1998 | Pachyrhinosaurus Sereno p. 62 |
| 2004 | Pachyrhinosaurus Dodson et al. p. 495 |
| 2004 | Pachyrhinosaurus Farke p. 5 |
| 2005 | Pachyrhinosaurus Ryan and Russell pp. 1381-3 fig. 10 |
| 2007 | Pachyrhinosaurus Ryan p. 391 fig. 12 |
| 2008 | Pachyrhinosaurus Longrich p. 994 |
| 2010 | Pachyrhinosaurus Longrich p. 692 fig. 10 |
| 2010 | Pachyrhinosaurus McDonald and Horner p. 160 fig. 10.5 |
| 2010 | Pachyrhinosaurus Xu et al. p. 1634 fig. 3 |
| 2011 | Pachyrhinosaurus Farke et al. p. 699 |
| 2011 | Pachyrhinosaurus McDonald p. 9 |
| 2012 | Pachyrhinosaurus Fiorillo and Tykoski |
| 2015 | Pachyrhinosaurus Evans and Ryan |
| 2017 | Pachyrhinosaurus 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. †Pachyrhinosaurus Sternberg 1950
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†Pachyrhinosaurus canadensis Sternberg 1950
†Pachyrhinosaurus lakustai Currie et al. 2008
†Pachyrhinosaurus perotorum Fiorillo and Tykoski 2012
Diagnosis
No diagnoses are available