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Monoclonius crassus
Taxonomy
Monoclonius crassus was named by Cope (1876). Its type specimen is AMNH 3998, a skull, and it is a 3D body fossil. Its type locality is mouth of Birch Creek, which is in a Campanian terrestrial sandstone in the Judith River Formation of Montana. It is the type species of Monoclonius.
It was considered a nomen dubium by Ryan et al. (2010), Fowler et al. (2011).
It was considered a nomen dubium by Ryan et al. (2010), Fowler et al. (2011).
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1876 | Monoclonius crassus Cope |
| 1877 | Monoclonius crassus Cope p. 316 |
| 1886 | Monoclonius crassus Cope p. 153 |
| 1887 | Monoclonius crassus Seeley p. 85 |
| 1889 | Monoclonius crassus Cope p. 717 |
| 1890 | Monoclonius crassus Zittel p. 697 |
| 1901 | Monoclonius crassus Nopcsa p. 216 |
| 1902 | Monoclonius crassus Hay p. 499 |
| 1902 | Monoclonius crassus Lambe p. 68 |
| 1905 | Monoclonius crassus Lambe p. 24 |
| 1907 | Monoclonius crassus Hatcher et al. pp. 71, 167 |
| 1910 | Monoclonius crassus Lull p. 772 |
| 1914 | Monoclonius crassus Brown pp. 549-551 |
| 1915 | Monoclonius crassus Lambe p. 12 |
| 1917 | Monoclonius crassus Brown p. 285 |
| 1921 | Monoclonius crassus Parks p. 54 |
| 1927 | Monoclonius crassus Huene p. 261 |
| 1930 | Monoclonius crassus Arldt p. 702 |
| 1930 | Monoclonius crassus Hay p. 221 |
| 1930 | Monoclonius crassus Russell p. 142 |
| 1933 | Monoclonius crassus Lull p. 82 |
| 1934 | Monoclonius crassus Chakravarti p. 78 |
| 1938 | Monoclonius crassus Sternberg p. 284 |
| 1940 | Monoclonius crassus Sternberg p. 468 |
| 1940 | Monoclonius lowei Sternberg p. 468 |
| 1964 | Monoclonius crassus Kuhn p. 57 |
| 1964 | Monoclonius lowei Kuhn p. 57 |
| 1964 | Monoclonius crassus Russell p. 10 |
| 1964 | Monoclonius lowei Russell p. 13 |
| 1964 | Monoclonius crassus Tatarinov p. 583 |
| 1966 | Monoclonius lowei Russell p. 25 |
| 1975 | Monoclonius lowei Langston p. 1585 |
| 1984 | Monoclonius lowei Russell p. 33 |
| 1986 | Monoclonius crassus Ostrom and Wellnhofer p. 117 |
| 1990 | Monoclonius crassus Dodson pp. 232-233 |
| 1990 | Monoclonius crassus Dodson and Currie p. 611 |
| 2004 | Monoclonius crassus Dodson et al. p. 495 |
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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.
†Monoclonius crassus Cope 1876
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Invalid names: Monoclonius lowei Sternberg 1940 [synonym]
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: g = genus, subo = suborder, o = order | |||||
| References: Marsh 1875, Peczkis 1995, Norman and Weishampel 1991 | |||||
Age range: base of the Middle Campanian to the top of the Late/Upper Campanian or 83.50000 to 70.60000 Ma
Collections (2 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Middle Campanian | USA (Montana) | Monoclonius crassus (type locality: 46121) | |
| Middle Campanian - Late/Upper Campanian | Canada (Alberta) | Monoclonius sp. (64399) |