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Leptauchenia lullianus
Taxonomy
Cyclopidius lullianus was named by Thorpe (1921). Its type locality is Big Muddy Creek, which is in an Arikareean terrestrial horizon in Wyoming.
It was recombined as Pseudocyclopidius lullianus by Schultz and Falkenbach (1968); it was synonymized subjectively with Leptauchenia major by CoBabe (1996), Lander (1998); it was recombined as Leptauchenia lullianus by Stevens and Stevens (2007), Prothero and Sanchez (2008).
It was recombined as Pseudocyclopidius lullianus by Schultz and Falkenbach (1968); it was synonymized subjectively with Leptauchenia major by CoBabe (1996), Lander (1998); it was recombined as Leptauchenia lullianus by Stevens and Stevens (2007), Prothero and Sanchez (2008).
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1921 | Cyclopidius lullianus Thorpe |
| 1937 | Cyclopidius lullianus Thorpe p. 246 figs. Figs. 173-177 |
| 1940 | Cyclopidius quadratus Koerner |
| 1968 | Pseudocyclopidius lullianus Schultz and Falkenbach |
| 1968 | Pseudocyclopidius quadratus Schultz and Falkenbach |
| 1968 | Pseudocyclopidius lullianus expiratus Schultz and Falkenbach p. 342 figs. Figures 36, 37, 39, 40, 53 |
| 2007 | Leptauchenia lullianus Stevens and Stevens p. 158 |
| 2008 | Leptauchenia lullianus Prothero and Sanchez |
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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.
†Leptauchenia lullianus Thorpe 1921
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Invalid names: Cyclopidius quadratus Koerner 1940 [synonym]
†Pseudocyclopidius lullianus expiratus Schultz and Falkenbach 1968
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| D. R. Prothero and F. Sanchez 2008 | Large leptaucheniines (P2-M3 length = 62-71 mm, M1-3 lengths = 42-48 mm, M1-2 lengths = 27-35 mm, and skull lengths = 125-185 mm) with very robust zygomatic arches and larger orbits; snout relatively flattened and shovel-like; malar relatively deep; teeth very hypsodont. |
Measurements
No measurements are available
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| Source: f = family, o = order, subc = subclass, c = class, subp = subphylum | |||||
| References: Hendy et al. 2009, Nowak 1999, Carroll 1988, Lillegraven 1979, Lander 1998 | |||||
Age range: base of the Geringian to the top of the Harrisonian or 29.50000 to 18.50000 Ma
Collections (12 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Geringian | USA (South Dakota) | Pseudocyclopidius lullianus (17505) | |
| Geringian | USA (Montana) | Cyclopidius quadratus (17722) | |
| Geringian | USA (Wyoming) | Pseudocyclopidius lullianus (17446) | |
| Arikareean | USA (Wyoming) | Cyclopidius lullianus (type locality: 17472 17667) Pseudocyclopidius lullianus (17698 17703) | |
| Arikareean | USA (Nebraska) | Pseudocyclopidius lullianus (17477 17569 17669 17692) | |
| Monroecreekian - Harrisonian | USA (Nebraska) | Pseudocyclopidius lullianus (17704) |