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Mimomys sawrockensis
Taxonomy
Ogmodontomys sawrockensis was named by Hibbard (1957) [used without justification by Chaline et al. 1999]. It is not extant. Its type specimen is UMMP 28166, a partial skull (Part of palatal region with M1 preserved). Its type locality is Saw Rock Canyon (Lower), which is in a Blancan terrestrial horizon in the Rexroad Formation of Kansas.
It was recombined as Mimomys sawrockensis by Repenning (1987), Mou (1997), Repenning (2003).
It was recombined as Mimomys sawrockensis by Repenning (1987), Mou (1997), Repenning (2003).
Sister species lacking formal opinion data
M. altenbergensis, M. arvalinus, M. burgondiae, M. cappettai, M. coelodus, M. exilis, M. fejervaryi, M. gracilis, M. hajnackensis, M. haplodentatus, M. hassiacus, M. hintoni, M. hungaricus, M. intermedius, M. ischus, M. kislangensis, M. lagurodontoides, M. medasensis, M. mehelyi, M. minor, M. moldavicus, M. newtoni, M. obtusus, M. orientalis, M. ostramosensis, M. ostramosi, M. oswaldoreigi, M. peii, M. petenyii, M. pitymyoides, M. polonicus, M. praehungaricus, M. praepliocaenicus, M. pseudintermedius, M. pusillus, M. realensis, M. reidi, M. rex, M. rhabonensis, M. savini, M. septimanus, M. simplex, M. stehlini, M. stehlinihintoni, M. tanaitica, M. tigliensis, M. tornensis, M. gracilis, M. stehlini, M. rex, M. intermedius, M. pusillus, M. hajnackensis, M. hassiacus, M. haplodentatus
Entered
by J. Alroy on 2003-01-23; modified by L. van den Hoek Ostende on 2013-10-27
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1957 | Ogmodontomys sawrockensis Hibbard |
| 1967 | Ogmodontomys sawrockensis Zakrzewski p. 136 |
| 1975 | Ogmodontomys sawrockensis Martin p. 104 |
| 1978 | Ophiomys mcknighti Gustafson p. 30 figs. Figure 17 |
| 1987 | Mimomys sawrockensis Repenning |
| 1997 | Mimomys sawrockensis Mou |
| 1997 | Mimomys (Ophiomys) mcknighti Mou p. 378 |
| 2002 | Ogmodontomys sawrockensis Martin et al. |
| 2002 | Ophiomys mcknighti Martin et al. |
| 2003 | Mimomys sawrockensis Repenning p. 480 |
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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.
†Mimomys sawrockensis Hibbard 1957
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Invalid names: Ophiomys mcknighti Gustafson 1978 [synonym]
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| R. J. Zakrzewski 1967 | Slightly smaller than Ogmodontomys poaphagus with shorter crowned teeth. The lateral palatal grooves are distinctly deeper than those of O. poaphagus.
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| L. D. Martin 1975 | Smaller and lower crowned teeth than in Ogmodontomys poaphagus, also differing from that species in having steep vertical walls to the palate, deeper palatal grooves, and lacking development of dentine tracts. | |
| E. P. Gustafson 1978 (Ophiomys mcknighti) | Similar in size to 0. magilli Hibbard (1972), larger than O. taylori (Hibbard, 1959) , but smaller than Ogmodontomys poaphagus Hibbard (1941), and Cosomys Wilson (1932). Molars rooted, lacking cement, lacking dentine tracts. M1 with three alternating triangles. Base of enamel on anterior loop of M1 near same level as on labial alternating triangles, not retracted upwards as in 0. magilli or 0. taylori. Apices of reentrant angles on lingual side of M1 ( except second) at right angles to the longi- tudinal plane of the tooth in young individuals, some_ times constricted and turned anterad in older indi- viduals but with less constriction than in 0. magilli. Enamel pit on anterior loop present in type M1 ; anterolabial margin of anterior loop rounded, some times possessing multiple grooves in early wear. M1 and M2 with three roots, other molars with two. | |
| R. A. Martin et al. 2002 | Slightly smaller than Ogmodontomys poaphagus Hibbard with shorter crowned teeth. The lateral palatal grooves are distinctly deepr than thos of O. poaphagus. | |
| C. A. Repenning 2003 | A species of Mimomys with lower dentine tracts than any other North American species of Mimomys. First lower molar with a large and persistent islet on the ACC of populations from the WFR, but small and shallow in the type material from Kansas, and a well-developed MK. Dentine tracts are stronger than in west Asian Mi- momys antiquus, about the same as in Mac- edonian Mimomys davakosi, and less devel- oped than in European Mimomys (Cseria) gracilis (see fig. 17.2D, E, fig. 17.3, fig. 17.4B, D). Size, as determined by the length of the first lower molar, is greatly variable in western populations of Mimomys sawrock- ensis, but comparable to that of the similar species from Paratethyian FR of Europe (Mi- momys davakosi, van de Weerd, 1979). |
Measurements
No measurements are available
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| Source: o = order, subc = subclass, c = class, subp = subphylum | |||||
| References: Lillegraven 1979, Carroll 1988, Ji et al. 2002, Nowak 1999, Hendy et al. 2009 | |||||
Age range: Blancan or 4.70000 to 1.40000 Ma
Collections (6 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Blancan | USA (Washington) | Mimomys mcknighti (20063 20064) | |
| Blancan | USA (California) | Mimomys sawrockensis (19713 234637 234660) | |
| Blancan | USA (Kansas) | Ogmodontomys sawrockensis (type locality: 19922) |