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Taxonomy
Poebrotherium sternbergii was named by Cope (1879). It is a 3D body fossil. Its type locality is John Day (non-specific), which is in an Arikareean terrestrial horizon in the John Day Formation of Oregon.
It was recombined as Gomphotherium sternbergi by Cope (1886) and Wortman (1898); it was recombined as Protomeryx sternbergii by Hay (1902); it was recombined as Miolabis (Paratylopus) sternbergi by Matthew (1904); it was recombined as Paratylopus sternbergi by Matthew (1909), Cope and Matthew (1915) and Lull (1921); it was recombined as Gentilicamelus sternbergi by Loomis (1936), McKenna (1966), Stevens (1977), Prothero (1996), Honey et al. (1998) and Marriott et al. (2022).
It was recombined as Gomphotherium sternbergi by Cope (1886) and Wortman (1898); it was recombined as Protomeryx sternbergii by Hay (1902); it was recombined as Miolabis (Paratylopus) sternbergi by Matthew (1904); it was recombined as Paratylopus sternbergi by Matthew (1909), Cope and Matthew (1915) and Lull (1921); it was recombined as Gentilicamelus sternbergi by Loomis (1936), McKenna (1966), Stevens (1977), Prothero (1996), Honey et al. (1998) and Marriott et al. (2022).
Synonymy list
| Year | Name and author |
|---|---|
| 1879 | Poebrotherium sternbergii Cope p. 59 |
| 1886 | Gomphotherium sternbergi Cope p. 619 fig. 11 |
| 1898 | Gomphotherium sternbergi Wortman p. 115 |
| 1902 | Protomeryx sternbergii Hay p. 676 |
| 1904 | Miolabis (Paratylopus) sternbergi Matthew p. 214 |
| 1909 | Paratylopus sternbergi Matthew |
| 1915 | Paratylopus sternbergi Cope and Matthew pp. Plate CXVI |
| 1921 | Paratylopus sternbergi Lull |
| 1936 | Gentilicamelus sternbergi Loomis p. 59 |
| 1966 | Gentilicamelus sternbergi McKenna p. 3 |
| 1977 | Gentilicamelus sternbergi Stevens |
| 1996 | Gentilicamelus sternbergi Prothero p. 643 figs. Figure 18, Tables 2, 3, 5 |
| 1998 | Gentilicamelus sternbergi Honey et al. |
| 2022 | Gentilicamelus sternbergi Marriott et al. p. 296 figs. Figure 1 |
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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.
†Gentilicamelus sternbergi Cope 1879
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| D. R. Prothero 1996 | Large camel (P2-M3 length = 70.0 mm), distinguished from contemporary P. primaevus by its larger size, and by the presence of metastylids on the lower molars. Distinguished from all other Eocene/Oligocene camels by its advanced features, including lower molar metastylids, strong P3 lingual cingulum, more spatulate lower incisors, and shortened PI. Distinguished from Miocene camels by its primitive skull proportions and by its brachydont teeth which are small relative to the skull size (Table 2). | |
| K. Marriott et al. 2022 | Same as for genus. [(modified from Honey et al., 1998, p. 447): A double-rooted Pl, unreduced P2-4 compared to Oxydactylus; weaker P3 internal crescent compared to Oxydactylus. Brachydont cheek teeth, with large ribs and styles on upper molars, approximately 1/3 the size ofthe paracone or metacone. Intercolumnar tubercles on Ml-3 and on m3. The rostrum and mandibular symphysis have a distinctive ventral deflection. Shallow maxillary fossa. Palatine notch extending to middle of M2. Inflated auditory bulla. Metacarpals slender and shorter than length ofskull, with metatarsals longer than metacarpals. Distal articular surfaces ofproximal phalanges unexpanded dorsally.] |