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Menodus dolichoceras
Taxonomy
Menodus dolichoceras was named by Scott and Osborn (1887).
It was recombined as Titanotherium dolichoceras by Osborn (1896); it was recombined as Brontotherium dolichoceras by Hay (1902) and Osborn (1929); it was considered a nomen dubium by Mader (1989) and Mader (1998).
It was recombined as Titanotherium dolichoceras by Osborn (1896); it was recombined as Brontotherium dolichoceras by Hay (1902) and Osborn (1929); it was considered a nomen dubium by Mader (1989) and Mader (1998).
Synonymy list
| Year | Name and author |
|---|---|
| 1887 | Menodus dolichoceras Scott and Osborn p. 160 |
| 1896 | Titanotherium dolichoceras Osborn p. 185 figs. Plate IV |
| 1902 | Brontotherium dolichoceras Hay p. 634 |
| 1929 | Brontotherium dolichoceras Osborn |
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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.
†Menodus dolichoceras Scott and Osborn 1887
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| W. B. Scott and H. F. Osborn 1887 | Dentition: I. ?, C. 1/, Pm. 4/, M 3/. Upper premolars with a faint internal cingulum. Nasal bones extremely short and obtuse. Horns extremely long and powerful, directed obliquely forwards and outwards, projecting beyond the nasals in side view. The section is sub-oval at the base, with the long axis obliquely transverse. Cranium very broad and saddle-shaped above the orbits, narrowing somewhat posteriorly. A prominent and overhanging superciliary ridge. Post-glenoid and post- tympanic processes united for a short distance. The skull which we have made the type of this species" is much larger and more powerful than Professor Cope's type of S. acer. The horns are longer and more widely divergent at the base. The angle of inclination of the horns and the diminutive proportions of the nasals, as well as the form of the top of the cranium, all bring this specimen near S. acer, and separate it from other known species. Unlike S. acer, the horns are not united by a ridge. The specimen is incomplete in the supraoccipital region, the zygomatic arch is fragmentary, and the maxillary, palatine and basioccipital regions are much distorted. |
Measurements
No measurements are available
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| Source: f = family, subc = subclass, c = class, subp = subphylum | |||||
| References: Mader 1998, Carroll 1988, Lillegraven 1979, Ji et al. 2002, Hendy et al. 2009 | |||||
Collections
No collection or age range data are available