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Limnenetes

Mammalia - Merycoidodontidae

Synonymy list
YearName and author
1902Limnenetes Douglass p. 259
1937Limnenetes Thorpe p. 44
1940Limnenetes Scott p. 687 figs. Plate LXXIII
1956Limnenetes Schultz and Falkenbach p. 461 fig. 12
1997Limnenetes McKenna and Bell p. 409
2001Limnenetes Tabrum and Nichols
2007Limnenetes Stevens and Stevens p. 158

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Deuterostomia
phylumChordataHaeckel 1874
subphylumVertebrata
superclassGnathostomata
Osteichthyes()
subclassSarcopterygii()
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
Tetrapoda
Reptiliomorpha
Anthracosauria
subclassAmphibiosauriaKuhn 1967
Cotylosauria()
Amniota
subclassSynapsida
Therapsida()
infraorderCynodontia()
Mammaliamorpha
RankNameAuthor
Mammaliaformes
classMammalia
Theriamorpha(Rowe 1993)
Theriiformes()
Trechnotheria
Cladotheria
Zatheria
subclassTribosphenida()
subclassTheria
Eutheria()
Placentalia
Boreoeutheria
Laurasiatheria
Scrotifera
Euungulata
Artiodactylamorpha
Artiodactyla()
familyMerycoidodontidae
subfamilyLeptaucheniinaeSchultz and Falkenbach 1940
genusLimnenetes

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.

G. †Limnenetes Douglass 1902
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Limnenetes platyceps Douglass 1902
Diagnosis
ReferenceDiagnosis
C. B. Schultz and C. H. Falkenbach 1956SKULL: 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
Composition: phosphaticsubp
Environment: terrestrialo
Locomotion: actively mobilec
Life habit: ground dwellingf
Diet: herbivoref
Reproduction: viviparoussubc
Created: 2005-08-31 14:37:21
Modified: 2005-08-31 16:37:21
Source: f = family, o = order, subc = subclass, c = class, subp = subphylum
References: Carroll 1988, Nowak 1999, Lander 1998, Lillegraven 1979, Hendy et al. 2009

Age range: Chadronian or 37.20000 to 33.90000 Ma

Collections (5 total)


Time interval Ma Country or state Original ID and collection number
Chadronian37.2 - 33.9USA (Montana) L. platyceps (17028) L. sp. (16990)
Chadronian37.2 - 33.9USA (Texas) L. platyceps (16888 16890)
Early/Lower Chadronian37.2 - 33.9USA (Montana) L. platyceps (27245)