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Bactrosaurus
Taxonomy
Bactrosaurus was named by Gilmore (1933).
It was assigned to Ornithopoda by Huene (1958); to Saurolophidae by Huene (1959); to Hadrosaurinae by Tatarinov (1964) and Rozhdestvensky (1968); to Lambeosaurinae by Gilmore (1933), Riabinin (1937), Riabinin (1938), Riabinin (1939), Brett-Surman (1979), Maryanska and Osmólska (1981), Weishampel and Weishampel (1983), Brinkmann (1984), Weishampel and Horner (1990), Chapman and Brett-Surman (1990), Dong (1992) and Nessov (1995); to Hadrosauridae by Romer (1956), Kuhn (1964), Rozhdestvensky (1965), Romer (1966), Charig (1967), Thulborn (1974), Taquet (1975), Rozhdestvensky (1977), Milner and Norman (1984), Carroll (1988), Weishampel et al. (1991), Horner et al. (2004), Norman (2004) and Gilpin et al. (2007); to Hadrosauroidea by Godefroit et al. (1998), Casanovas et al. (1999), You et al. (2003), You et al. (2003), Godefroit et al. (2004), Prieto-Márquez et al. (2006), Godefroit et al. (2008), Pereda-Suberbiola et al. (2009), Sues and Averianov (2009), McDonald et al. (2010), McDonald et al. (2010), Prieto-Marquez and Salinas (2010), Prieto-Márquez and Wagner (2010) and Ramírez-Velasco et al. (2012); to Hadrosauroidea by Prieto-Márquez (2010), Prieto-Márquez (2010), Wang et al. (2011), McDonald (2012), Tan et al. (2015), Xu et al. (2016), Cruzado-Caballero and Powell (2017), Takasaki et al. (2019) and Dalla Vecchia (2020); and to Hadrosauromorpha by Norman (2014) and Verdú et al. (2021).
It was assigned to Ornithopoda by Huene (1958); to Saurolophidae by Huene (1959); to Hadrosaurinae by Tatarinov (1964) and Rozhdestvensky (1968); to Lambeosaurinae by Gilmore (1933), Riabinin (1937), Riabinin (1938), Riabinin (1939), Brett-Surman (1979), Maryanska and Osmólska (1981), Weishampel and Weishampel (1983), Brinkmann (1984), Weishampel and Horner (1990), Chapman and Brett-Surman (1990), Dong (1992) and Nessov (1995); to Hadrosauridae by Romer (1956), Kuhn (1964), Rozhdestvensky (1965), Romer (1966), Charig (1967), Thulborn (1974), Taquet (1975), Rozhdestvensky (1977), Milner and Norman (1984), Carroll (1988), Weishampel et al. (1991), Horner et al. (2004), Norman (2004) and Gilpin et al. (2007); to Hadrosauroidea by Godefroit et al. (1998), Casanovas et al. (1999), You et al. (2003), You et al. (2003), Godefroit et al. (2004), Prieto-Márquez et al. (2006), Godefroit et al. (2008), Pereda-Suberbiola et al. (2009), Sues and Averianov (2009), McDonald et al. (2010), McDonald et al. (2010), Prieto-Marquez and Salinas (2010), Prieto-Márquez and Wagner (2010) and Ramírez-Velasco et al. (2012); to Hadrosauroidea by Prieto-Márquez (2010), Prieto-Márquez (2010), Wang et al. (2011), McDonald (2012), Tan et al. (2015), Xu et al. (2016), Cruzado-Caballero and Powell (2017), Takasaki et al. (2019) and Dalla Vecchia (2020); and to Hadrosauromorpha by Norman (2014) and Verdú et al. (2021).
Species
Synonyms
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Synonymy list
Year | Name and author |
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1933 | Bactrosaurus Gilmore p. 50 |
1937 | Bactrosaurus Riabinin p. 91 |
1937 | Bactrosaurus prynadai Riabinin p. 91 |
1938 | Bactrosaurus prynadai Riabinin p. 126 |
1938 | Bactrosaurus Riabinin p. 133 |
1939 | Bactrosaurus Riabinin p. 17 |
1939 | Bactrosaurus prynadai Riabinin p. 17 |
1954 | Bactrosaurus prinadai Yuryev p. 190 |
1956 | Bactrosaurus Romer p. 630 |
1958 | Bactrosaurus Huene p. 206 |
1958 | Tanius prynadai Young p. 111 |
1959 | Bactrosaurus Huene p. 122 |
1964 | Bactrosaurus Kuhn p. 15 |
1964 | Bactrosaurus prynadai Kuhn p. 15 |
1964 | Bactrosaurus Tatarinov p. 561 |
1965 | Bactrosaurus Rozhdestvensky |
1966 | Bactrosaurus Romer p. 370 |
1967 | Bactrosaurus Charig p. 716 |
1967 | Bactrosaurus prynadai Charig p. 716 |
1968 | Bactrosaurus Rozhdestvensky |
1974 | Bactrosaurus Thulborn p. 173 |
1975 | Bactrosaurus Taquet p. 507 |
1977 | Bactrosaurus Rozhdestvensky p. 113 |
1979 | Bactrosaurus Brett-Surman p. 561 |
1981 | Bactrosaurus Maryanska and Osmólska p. 8 |
1983 | Bactrosaurus Weishampel and Weishampel p. 44 |
1984 | Bactrosaurus Brinkmann p. 302 fig. 4 |
1984 | Bactrosaurus Milner and Norman p. 146 |
1988 | Bactrosaurus Carroll |
1990 | Bactrosaurus Chapman and Brett-Surman p. 177 |
1990 | Bactrosaurus Weishampel and Horner p. 557 |
1991 | Bactrosaurus Weishampel et al. p. 204 |
1992 | Bactrosaurus Dong p. 166 |
1995 | Bactrosaurus Nessov pp. 47-48 |
1997 | Bactrosaurus prynadai Ryan p. 443 |
1998 | Bactrosaurus Godefroit et al. p. 8 |
1998 | Bactrosaurus prynadai Godefroit et al. p. 8 |
1999 | Bactrosaurus Casanovas et al. pp. 351-352 fig. 3 |
2003 | Bactrosaurus You et al. p. 152 fig. 3 |
2003 | Bactrosaurus You et al. p. 351 fig. 3 |
2004 | Bactrosaurus Godefroit et al. p. 147 |
2004 | Bactrosaurus Horner et al. p. 439 |
2004 | Bactrosaurus Norman p. 433 figs. 19.21-19.22 |
2006 | Bactrosaurus Prieto-Márquez et al. p. 938 |
2007 | Bactrosaurus Gilpin et al. p. 80 |
2008 | Bactrosaurus Godefroit et al. p. 65 |
2009 | Bactrosaurus Pereda-Suberbiola et al. p. 568 fig. 6 |
2009 | Bactrosaurus Sues and Averianov p. 2552 fig. 2 |
2010 | Bactrosaurus McDonald et al. p. 33 fig. 39 |
2010 | Bactrosaurus McDonald et al. p. 808 fig. 10 |
2010 | Bactrosaurus Prieto-Marquez and Salinas p. 835 fig. 20 |
2010 | Bactrosaurus Prieto-Márquez p. 5 fig. 2 |
2010 | Bactrosaurus Prieto-Márquez and Wagner p. 1243 fig. 3 |
2011 | Bactrosaurus Wang et al. p. 155 fig. 11 |
2012 | Bactrosaurus McDonald p. 2 |
2012 | Bactrosaurus Ramírez-Velasco et al. p. 392 |
2014 | Bactrosaurus Norman p. 37 fig. 2.30 |
2015 | Bactrosaurus Tan et al. p. 259 |
2016 | Bactrosaurus Xu et al. p. 71 |
2017 | Bactrosaurus Cruzado-Caballero and Powell p. 12 fig. 13 |
2019 | Bactrosaurus Takasaki et al. p. 3 |
2020 | Bactrosaurus Dalla Vecchia p. 611 |
2021 | Bactrosaurus Verdú et al. p. 10 fig. 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. †Bactrosaurus Gilmore 1933
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†Bactrosaurus johnsoni Gilmore 1933
Invalid names: Bactrosaurus prynadai Riabinin 1937 [nomen dubium]
Diagnosis
Reference | Diagnosis | |
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C. W. Gilmore 1933 | GENERIC AND SPECIFIC CHARACTERS.—Dentition reduced, twenty-three vertical rows of teeth in dentary, twenty-eight in maxillary. Posterior dorsal vertebra with tall spines, club-shaped. Sacrum with seven coössified vertebrae. Ilium strongly arched, preacetabular process decurved; ischium stout with expanded foot-like end. Pubis short with greatly expanded blade. Terminal phalanges of pes with thickened truncate anterior borders. | |
P. Godefroit et al. 1998 | As for the only known species, Bactrosaurus johnsoni Gilmore, 1933. |
Measurements
No measurements are available
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Source: g = genus, subo = suborder, o = order | |||||
References: Peczkis 1995, Benton 1983, Marsh 1875 |
Age range: base of the Coniacian to the top of the Late/Upper Campanian or 89.80000 to 70.60000 Ma
Collections (7 total)
Time interval | Ma | Country or state | Original ID and collection number |
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Cenomanian - Santonian | Mongolia (Omnogov) | B. sp. (55254 137858) | |
Late/Upper Cretaceous | China (Shanxi) | B. johnsoni (71840) | |
Coniacian - Santonian | Tajikistan (Asht) | B. prynadai (53132) | |
Middle Campanian - Late/Upper Campanian | China (Nei Mongol) | B. johnsoni (38833) B. sp. (28778) Hadrosauridae indet., Gilmoreosaurus mongoliensis (48933) |