Puneet Varma (Editor)

Osbornodon iamonensis

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Kingdom
  
Animalia

Class
  
Mammalia

Family
  
Canidae

Rank
  
Species

Phylum
  
Chordata

Order
  
Carnivora

Genus
  
†Osbornodon

Osbornodon iamonensis

Similar
  
Osbornodon, Cynarctoides lemur, Enhydrocyon

Osbornodon iamonensis is an extinct species of bone-crushing Hesperocyoninae, a predecessor of modern dogs that were endemic to North America and which lived from the Orellan age of the Early Oligocene to Early Miocene epoch 23.6—16.3 Ma and existed for approximately 7.3 million years.

Contents

O. iamonensis was named by E. H. Sellards in 1916 for Lake Iamonia in northern Florida.

Taxonomy

Osbornodon iamonensis was named by E. H. Sellards (1916). Its type is FGS 5082. It was recombined as Cynodesmus iamonensis by Simpson (1932), Olsen (1956) and Wilson (1960); it was recombined as Osbornodon iamonensis by Xiaoming Wang (1994), X. Wang and Richard H. Tedford (1996) and Hayes (2000). It was assigned to Mesocyon by Sellards (1916); to Cynodesmus by Simpson (1932), Olsen (1956) and Wilson (1960); and to Osbornodon by Wang (1994), Wang and Tedford (1996) and Hayes (2000).

Morphology

Two fossil specimens were examined by Legendre and Roth for body mass.

  • Specimen 1 was estimated to have weighed 17.6 kg (39 lb).
  • Specimen 2 was estimated to have weighed 16.2 kg (36 lb).
  • Fossil distribution

  • Griscom Plantation Site, northeast Leon County, Florida. ~23.6—18.8 Mya.
  • Thomas Farm site in Gilchrist County, Florida. ~21.7 Mya.
  • The remaining two specimens were found in the Dry Creek Prospect B Site and Bridgeport Quarries Site of Nebraska. ~20.6—16.3 Mya.
  • References

    Osbornodon iamonensis Wikipedia