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Brachylophosaurus
Taxonomy
Brachylophosaurus was named by Sternberg (1953).
It was assigned to Maiasaurinae by Horner (1992); to Hadrosauridae by Kuhn (1964), Romer (1966), Thulborn (1974), Molnar (1980), Russell (1984), Clemens (1986), Horner (1988), Carroll (1988) and Eberth et al. (2001); to Hadrosaurinae by Sternberg (1953), Sternberg (1954), Hopson (1975), Brett-Surman (1979), Weishampel and Weishampel (1983), Dodson (1983), Maryanska and Osmólska (1984), Weishampel and Horner (1990), Chapman and Brett-Surman (1990), Forster (1997), Godefroit et al. (1998), You et al. (2003), Horner et al. (2004), Godefroit et al. (2004), Ryan and Evans (2005), Prieto-Márquez (2005), Kirkland et al. (2006), Prieto-Márquez et al. (2006), Godefroit et al. (2008), Pereda-Suberbiola et al. (2009), Guenther (2009), Cruzado-Caballero et al. (2010) and Tan et al. (2015); to Brachylophosaurini by Gates et al. (2011), Lehman et al. (2016) and Cruzado-Caballero and Powell (2017); and to Saurolophinae by Tatarinov (1964), Kuhn (1966), Prieto-Márquez (2010), Prieto-Márquez (2010), Prieto-Marquez and Salinas (2010), Prieto-Márquez and Wagner (2010), Ramírez-Velasco et al. (2012), Prieto-Marquez (2013), Bell (2014) and Dalla Vecchia (2020).
It was assigned to Maiasaurinae by Horner (1992); to Hadrosauridae by Kuhn (1964), Romer (1966), Thulborn (1974), Molnar (1980), Russell (1984), Clemens (1986), Horner (1988), Carroll (1988) and Eberth et al. (2001); to Hadrosaurinae by Sternberg (1953), Sternberg (1954), Hopson (1975), Brett-Surman (1979), Weishampel and Weishampel (1983), Dodson (1983), Maryanska and Osmólska (1984), Weishampel and Horner (1990), Chapman and Brett-Surman (1990), Forster (1997), Godefroit et al. (1998), You et al. (2003), Horner et al. (2004), Godefroit et al. (2004), Ryan and Evans (2005), Prieto-Márquez (2005), Kirkland et al. (2006), Prieto-Márquez et al. (2006), Godefroit et al. (2008), Pereda-Suberbiola et al. (2009), Guenther (2009), Cruzado-Caballero et al. (2010) and Tan et al. (2015); to Brachylophosaurini by Gates et al. (2011), Lehman et al. (2016) and Cruzado-Caballero and Powell (2017); and to Saurolophinae by Tatarinov (1964), Kuhn (1966), Prieto-Márquez (2010), Prieto-Márquez (2010), Prieto-Marquez and Salinas (2010), Prieto-Márquez and Wagner (2010), Ramírez-Velasco et al. (2012), Prieto-Marquez (2013), Bell (2014) and Dalla Vecchia (2020).
Species
Synonymy list
Year | Name and author |
---|---|
1953 | Brachylophosaurus Sternberg p. 1 |
1954 | Brachylophosaurus Sternberg p. 383 |
1964 | Brachylophosaurus Kuhn p. 15 |
1964 | Brachylophosaurus Tatarinov p. 565 |
1966 | Brachylophosaurus Kuhn p. 103 |
1966 | Brachylophosaurus Romer p. 370 |
1974 | Brachylophosaurus Thulborn p. 173 |
1975 | Brachylophosaurus Hopson p. 25 fig. 3 |
1979 | Brachylophosaurus Brett-Surman p. 561 fig. 1 |
1980 | Brachylophosaurus Molnar p. 138 |
1983 | Brachylophosaurus Dodson p. 94 |
1983 | Brachylophosaurus Weishampel and Weishampel p. 44 |
1984 | Brachylophosaurus Maryanska and Osmólska p. 131 |
1984 | Brachylophosaurus Russell p. 25 |
1986 | Brachylophosaurus Clemens p. 80 |
1988 | Brachylophosaurus Carroll |
1988 | Brachylophosaurus Horner p. 315 |
1990 | Brachylophosaurus Chapman and Brett-Surman p. 177 |
1990 | Brachylophosaurus Weishampel and Horner p. 556 |
1992 | Brachylophosaurus Horner p. 119 |
1997 | Brachylophosaurus Forster p. 294 |
1998 | Brachylophosaurus Godefroit et al. p. 51 |
2001 | Brachylophosaurus Eberth et al. p. 57 |
2003 | Brachylophosaurus You et al. p. 152 fig. 3 |
2004 | Brachylophosaurus Godefroit et al. p. 148 fig. 6 |
2004 | Brachylophosaurus Horner et al. p. 439 |
2005 | Brachylophosaurus Prieto-Márquez pp. 144-145 fig. 10 |
2005 | Brachylophosaurus Ryan and Evans p. 332 |
2006 | Brachylophosaurus Kirkland et al. p. 311 fig. 13 |
2006 | Brachylophosaurus Prieto-Márquez et al. p. 938 |
2008 | Brachylophosaurus Godefroit et al. p. 67 fig. 18 |
2009 | Brachylophosaurus Guenther p. 1440 |
2009 | Brachylophosaurus Pereda-Suberbiola et al. p. 568 fig. 6 |
2010 | Brachylophosaurus Cruzado-Caballero et al. p. 1510 fig. 4 |
2010 | Brachylophosaurus Prieto-Marquez and Salinas p. 835 fig. 20 |
2010 | Brachylophosaurus Prieto-Márquez p. 5 fig. 2 |
2010 | Brachylophosaurus Prieto-Márquez and Wagner p. 1241 |
2011 | Brachylophosaurus Gates et al. p. 798 |
2012 | Brachylophosaurus Ramírez-Velasco et al. p. 392 |
2013 | Brachylophosaurus Prieto-Marquez |
2014 | Brachylophosaurus Bell p. 573 |
2015 | Brachylophosaurus Tan et al. p. 254 |
2016 | Brachylophosaurus Lehman et al. p. 346 |
2017 | Brachylophosaurus Cruzado-Caballero and Powell p. 12 fig. 13 |
2020 | Brachylophosaurus Dalla Vecchia p. 611 |
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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. †Brachylophosaurus Sternberg 1953
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†Brachylophosaurus canadensis Sternberg 1953
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Invalid names: Brachylophosaurus goodwini Horner 1988 [synonym]
Diagnosis
Reference | Diagnosis | |
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C. M. Sternberg 1953 | Generic and Specific Characters. Skull (side view) high in front, subrectangular, medium breadth; premaxillae high; beak subrectangular in outline, down-turned in front, not reflected; nasal orifice oval, relatively high, no depressed area for nasal organ; nasal parallel to tooth row, extending back over the frontals to form a Saurolophus-like crest overhanging the parietals; frontals short, mid-portion covered by nasals but outer tip forming part of orbital rim; occipital region narrow, slightly overhanging occipital condyle; paroccipital process of exoccipital heavy and long; maxilla relatively high in front with long anterior maxillary process fitting in groove in premiaxilla; lachrymal large, triangular, with tip extending far forward; jugal slender, posterior part narrow and strongly upturned; orbit high; lateral temporal fossa about three times as high as wide; quadrate moderately long and slightly curved; prevomer subtriangular, much longer than high, very thin; dentary moderately high, edentulous portion equal to about half the length of the tooth magazine, upper edge carries forward at about same level as triturating surface then turns down
very sharply; enamel face of dentary teeth about three times as high as broad, lingual-buccal diameter greater than fore-and-aft breadth; vertical rows of teeth inore numerous in the maxilla (about 49) than in the dentary (about 39) ; skeleton massive; cervical vertebrae low and broad; anterior dorsals with neural spines of moderate height but great fore-and-aft diameter; forearm very long. | |
J. R. Horner 1988 | Hadrosaurid with a posteriorly directed, low solid nasal crest; nasal depression not extended to crest; lightly constructed jugal with large ventrally projecting boss; anteroposteriorly short supraoccipital-exoccipital roof posterior to the foramen magnum. |
Measurements
No measurements are available
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Source: subo = suborder, o = order | |||||
References: Marsh 1875, Benton 1983 |
Age range: base of the Late/Upper Campanian to the top of the Campanian or 83.50000 to 72.10000 Ma
Collections (8 total)
Time interval | Ma | Country or state | Original ID and collection number |
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Campanian | USA (Montana) | Maiasaura sp. (53146) | |
Late/Upper Campanian | Canada (Alberta) | B. canadensis (162171) Gryposaurus sp. (59041) | |
Middle Campanian | USA (Montana) | B. canadensis (167804) B. goodwini (26779 227264) Hadrosauridae indet. (69281) | |
Middle Campanian - Late/Upper Campanian | USA (Montana) | B. canadensis (73891) |