Basic info Taxonomic history Classification Included Taxa
Morphology Ecology and taphonomy External Literature Search Age range and collections

Heptodon calciculus

Mammalia - Perissodactyla

Taxonomy
Lophiodon calciculus was named by Cope (1880).

It was recombined as Pachynolophus calciculus by Cope (1881); it was synonymized subjectively with Helaletes nanus by Stucky (1984); it was recombined as Heptodon calciculus by Cope (1882), Wortman (1896), Hay (1902), Radinsky (1963) and Colbert and Schoch (1998).

Synonyms
Synonymy list
YearName and author
1880Lophiodon calciculus Cope p. 747
1880Lophiodon ventorum Cope p. 747
1881Pachynolophus calciculus Cope p. 197
1881Pachynolophus ventorum Cope p. 197
1882Heptodon calciculus Cope
1882Heptodon ventorum Cope p. 1029
1896Heptodon calciculus Wortman
1896Heptodon ventorum Wortman
1902Heptodon calciculus Hay p. 625
1902Heptodon ventorum Hay p. 625
1963Heptodon calciculus Radinsky p. 33
1984Heptodon ventorum Stucky
1998Heptodon calciculus Colbert and Schoch

Is something missing? Join the Paleobiology Database and enter the data

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
—Cladotheria
—Zatheria
subclassTribosphenida()
subclassTheria
—Eutheria()
—Placentalia
—Boreoeutheria
—Laurasiatheria
—Scrotifera
—Euungulata
—Panperissodactyla
superorderPerissodactylamorpha
orderPerissodactyla()
—Tapiromorpha(Haeckel 1873)
—Ceratomorpha(Wood 1937)
superfamilyTapiroideaGill 1872
genusHeptodon
speciescalciculus()

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.

†Heptodon calciculus Cope 1880
show all | hide all
Invalid names: Lophiodon ventorum Cope 1880 [synonym]
Diagnosis
ReferenceDiagnosis
L. B. Radinsky 1963Size small: mean length m1-3 = 35.08 mm. See Table 4
Measurements
No measurements are available
Composition: phosphaticsubp
Environment: terrestrialsubc
Locomotion: actively mobilec
Life habit: ground dwellingsuperf
Diet: browsersuperf
Reproduction: viviparoussubc
Created: 2005-08-31 15:03:27
Modified: 2005-08-31 17:03:27
Source: superf = superfamily, subc = subclass, c = class, subp = subphylum
References: Ji et al. 2002, Lillegraven 1979, Colbert and Schoch 1998, Hendy et al. 2009, Carroll 1988

Age range: base of the Lostcabinian to the top of the Early/Lower Eocene or 55.80000 to 48.60000 Ma

Collections (56 total)


Time interval Ma Country or state Original ID and collection number
Lostcabinian55.8 - 50.3USA (Wyoming) Heptodon ventorum (15903 15915 15917 15930)
Wasatchian55.8 - 50.3USA (Colorado) Heptodon calciculus (15293 15302 15325 15338 15393 15395 15426)
Wasatchian55.8 - 50.3USA (Wyoming) Heptodon calciculus (15454 15486 15548 15551 15552 15553 15554 15555 15556 15557 15558 15560 15564 15565 15576 15839 15852 15934 15935 15964 46692 46699 46700 46703 46706 46711 46715 46746 46810 46811 46849 186937 186940 186951) Heptodon ventorum (15479 15661 15662 15710 15942 15963)
Early/Lower Eocene55.8 - 48.6USA (Wyoming) Heptodon calciculus (15680 15684)
Bridgerian50.3 - 46.2USA (Wyoming) Heptodon ventorum (16207 16397 16415)