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Helohyus plicodon

Mammalia - Ungulata

Taxonomy
Helohyus plicodon was named by Marsh (1872) [genotype]. It is a 3D body fossil. Its type locality is Grizzly Buttes, which is in a Bridgerian terrestrial horizon in the Bridger Formation of Wyoming. It is the type species of Helohyus.

Synonyms
Synonymy list
YearName and author
1872Helohyus plicodon Marsh p. 207
1872Thinotherium validum Marsh p. 208
1894Helohyus plicodon Marsh p. 264
1902Helohyus plicodon Hay p. 650
1902Helohyus validus Hay p. 650
1976Helohyus validus Gazin

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RankNameAuthor
kingdomAnimalia()
Triploblastica
Nephrozoa
Deuterostomia
phylumChordataHaeckel 1847
subphylumVertebrata
superclassGnathostomata
Osteichthyes()
Sarcopterygii
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
Tetrapoda()
Reptiliomorpha
Anthracosauria
Batrachosauria()
Cotylosauria()
Amniota
RankNameAuthor
Synapsida()
Therapsida()
infraorderCynodontia()
Epicynodontia
infraorderEucynodontia
Probainognathia
Mammaliamorpha
Mammaliaformes
classMammalia
subclassTribosphenida()
infraclassEutheria()
orderUngulata(Linnaeus 1766)
orderArtiodactyla()
Cetancodonta
Cetaceamorpha
genusHelohyus
speciesplicodon

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
No diagnoses are available
Measurements
No measurements are available
Composition: phosphaticsubp
Environment: terrestrialo
Locomotion: actively mobilec
Life habit: amphibiousuc
Diet: herbivoreg
Diet 2: omnivoreg
Created: 2011-04-22 22:54:53
Modified: 2011-04-22 07:54:53
Source: g = genus, o = order, c = class, subp = subphylum, uc = unranked clade
References: Spaulding et al. 2009, Nowak 1999, Carroll 1988, Hendy et al. 2009

Age range: Bridgerian or 50.30000 to 46.20000 Ma

Collections (23 total)


Time interval Ma Country or state Original ID and collection number
Bridgerian50.3 - 46.2USA (Wyoming) Helohyus plicodon (16133 16143 16150 16152 16154 16156 16166 16168 16177 16182 16190 16193 type locality: 16228 16234 16255 16278 16294 16402 16406 16448) Helohyus validus (16137 16205 16423)