Leptomeryx

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Leptomeryx
Temporal range: middle Eocene to early Miocene[1]
Leptomeryx 1.JPG
Skeleton, Paleontology Museum of Zurich
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Artiodactyla
Family: Leptomerycidae
Genus: Leptomeryx
Leidy, 1853
Type species
Leptomeryx evansi
Species[2]
  • L. blacki
  • L. evansi
  • L. mammifer
  • L. obliquidens
  • L. speciosus
  • L. yoderi

Leptomeryx is an extinct genus of ruminant of the family Leptomerycidae, endemic to North America during the Eocene through Oligocene 38—24.8 Mya, existing for approximately 13.2 million years.

Taxonomy[edit]

Mounted skeleton
L. evansi

Leptomeryx was named by Leidy (1853). Its type is Leptomeryx evansi. It was assigned to Leptomerycinae by Matthew (1908); to Hypertragulidae by Cook (1934); and to Leptomerycidae by Leidy (1853) and then by Carroll (1988).[3]

Morphology[edit]

Leptomeryx was a small deer-like ruminant with somewhat slender body.

Body mass[edit]

Four specimens were examined by Legendre and Roth for body mass.[4]

  • Specimen 1 weighed an estimated: 7.62 kg (17 lb)
  • Specimen 2: 14.7 kg (32 lb)
  • Specimen 3: 6.24 kg (14 lb)
  • Specimen 4: 5.72 kg (13 lb)

Fossil distribution[edit]

Sites and species recovered:

References[edit]

  1. ^ Webb, 1998, p. 474.
  2. ^ Webb, 1998, p.471.
  3. ^ R. L. Carroll. 1988. Vertebrate Paleontology and Evolution. W. H. Freeman and Company, New York 1-698
  4. ^ S. Legendre and C. Roth. 1988. Correlation of carnassial tooth size and body weight in recent carnivores (Mammalia). Historical Biology 1(1):85-98
  5. ^ Paleobiology database: Toadstool Park collection
  6. ^ Paleobiology database: Medicine Pole Hills collection
  • Webb, S.D., 1998. Hornless ruminants. pp.463-476 in C.M. Janis, K.M. Scott, and L.L. Jacobs (eds.) Evolution of Tertiary Mammals of North America. Volume 1: Terrestrial Carnivores, Ungulates, and Ungulatelike Mammals. Cambridge University Press, Cambridge. ISBN 0-521-35519-2
  • Heaton, T.H. and Emry, R.J., 1996. Leptomerycidae pp. 581-608 in D.R. Prothero and R.J. Emry (eds.) The Terrestrial Eocene-Oligocene Transition in North America. Cambridge University Press, Cambridge.
  • Clark, John (1970-03-27). "Population dynamics of Leptomeryx". Fieldiana - Geology 16 (16): 411–451. Retrieved 2014-04-20.