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Limnenetes
Taxonomy
Limnenetes was named by Douglass (1902).
It was synonymized subjectively with Leptauchenia by Lander (1998).
It was assigned to Oreonetinae by Schultz and Falkenbach (1956); to Leptaucheniini by McKenna and Bell (1997); to Merycoidodontidae by Thorpe (1937), Scott (1940), Tabrum and Nichols (2001); and to Leptaucheniinae by Stevens and Stevens (2007).
It was synonymized subjectively with Leptauchenia by Lander (1998).
It was assigned to Oreonetinae by Schultz and Falkenbach (1956); to Leptaucheniini by McKenna and Bell (1997); to Merycoidodontidae by Thorpe (1937), Scott (1940), Tabrum and Nichols (2001); and to Leptaucheniinae by Stevens and Stevens (2007).
Species
Synonymy list
| Year | Name and author |
|---|---|
| 1902 | Limnenetes Douglass p. 259 |
| 1937 | Limnenetes Thorpe p. 44 |
| 1940 | Limnenetes Scott p. 687 figs. Plate LXXIII |
| 1956 | Limnenetes Schultz and Falkenbach p. 461 fig. 12 |
| 1997 | Limnenetes McKenna and Bell p. 409 |
| 2001 | Limnenetes Tabrum and Nichols |
| 2007 | Limnenetes Stevens and Stevens p. 158 |
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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.
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| C. B. Schultz and C. H. Falkenbach 1956 | SKULL: Small size; basal length ((96)) mm., width 65.5 mm., approximately equal in size to examples of Oreonetes, distinctly larger than those of Bathygenys; sagittal crest light and low, with posterior downward slope, then upward to supraoccipital wings, more prominent than in Oreonetes; brain case well inflated, broader than in Oreonetes; nasals short and broad (in contrast to the long and narrow ones in Oreonetes) ; frontals broad (wider than in
Oreonetes) ; supraorbital foramen similar to that of 0reonetes; orbit closed3 ; zygomatic arch moderately light, but heavier and with more depth posteriorly than in Oreonetes; infra-orbital foramen above P4 ; lacrimal fossa small and shallow (large and deep in Oreonetes) ; occipital condyles moderately large (larger than those of Oreonetes) ; paroccipital process suggests being slightly more robust than in Oreonetes; auditory bulla well inflated, somewhat oblong in outline (anteroposteriorly), noticeable posterior external hyoidal pit; postglenoid process moderately light, external border with inward and downward slope of approximately 45 degrees ; glenoid surface longer (anteroposteriorly) than in Oreonetes; posterior palate extending to anterior lobe of M 8 • MANDIBLE: Approximately equal to those of Oreonetes anceps; postsymphysis below posterior portion of P8• (Known from referred incomplete mandible only.) DENTITION: Slightly more hypsodont than in examples of Oreonetes; external styles of superior molars prominent, slightly more so than in Oreonetes. only from P8-M 8.) LIMBS: Medium size moderately robust; approximate length of those of Miniochoerus (Paraminiochoerus) gracilis. (Known only from questionably referred examples, see discussion, p. 463.) |
Measurements
No measurements are available
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| Source: f = family, o = order, subc = subclass, c = class, subp = subphylum | |||||
| References: Carroll 1988, Lillegraven 1979, Nowak 1999, Hendy et al. 2009, Lander 1998 | |||||
Age range: Chadronian or 37.00000 to 33.90000 Ma
Collections (5 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Chadronian | USA (Montana) | L. platyceps (17028) L. sp. (16990) | |
| Chadronian | USA (Texas) | L. platyceps (16888 16890) | |
| Early/Lower Chadronian | USA (Montana) | L. platyceps (27245) |