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Megalagus primitivus

Mammalia - Lagomorpha - Leporidae

Taxonomy
Hypolagus primitivus was named by Schlaikjer (1935). Its type specimen is MCZ 2887, a partial skull, and it is a 3D body fossil. Its type locality is YBO Ranch, which is in an Arikareean/Arikareean terrestrial horizon in Wyoming.

It was recombined as Palaeolagus primitivus by Wood (1937) and Wood (1940); it was recombined as Megalagus primitivus by Dawson (1958), Macdonald (1963) and Macdonald (1970).

Synonymy list
YearName and author
1935Hypolagus primitivus Schlaikjer
1937Palaeolagus primitivus Wood
1940Palaeolagus primitivus Wood
1958Megalagus primitivus Dawson
1963Megalagus primitivus Macdonald
1970Megalagus primitivus Macdonald

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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
—EuarchontogliresMurphy et al. 2001
—GliriformesWyss and Meng 1996
—Glires()
—Duplicidentata()
orderLagomorphaBrandt 1885
familyLeporidae
subfamilyPalaeolaginaeDice 1929
genusMegalagusWalker 1931
speciesprimitivus()

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.

†Megalagus primitivus Schlaikjer 1935
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
Composition: phosphaticsubp
Environment: terrestrialsubc
Locomotion: actively mobilec
Life habit: ground dwellingf
Diet: grazerf
Diet 2: browserf
Reproduction: viviparoussubc
Created: 2005-06-08 10:11:09
Modified: 2005-08-26 13:52:57
Source: f = family, subc = subclass, c = class, subp = subphylum
References: Carroll 1988, Hendy et al. 2009, Nowak 1991, Lillegraven 1979, Ji et al. 2002

Age range: base of the Whitneyan to the top of the Geringian or 33.30000 to 26.30000 Ma

Collections (14 total)


Time interval Ma Country or state Original ID and collection number
Whitneyan33.3 - 30.8Canada (Saskatchewan) Megalagus primitivus (17372)
Geringian30.8 - 26.3USA (South Dakota) Megalagus primitivus (17623 17630 17633 17634 17635 17636 17637 17641 17651 17652)
Arikareean29.5 - 18.5USA (Nebraska) Megalagus primitivus (17708)
early Early Arikareean29.5 - 18.5USA (Nebraska) Megalagus primitivus (156729)
early Early Arikareean - late Early Arikareean29.5 - 18.5USA (Wyoming) Hypolagus primitivus (type locality: 17730)