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Osbornodon iamonensis is an extinct species of hesperocyonine, a predecessor of modern dogs that were endemic to North America and which lived from the Oligocene to Early Miocene epoch 23.6—16.3 Ma and existed for approximately 8 million years.[1] It was named for Lake Iamonia in northern Florida. Fossils have been found in Florida and Nebraska.

Osbornodon iamonensis
Temporal range: Oligocene–Early Miocene
Scientific classification edit
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Carnivora
Family: Canidae
Genus: Osbornodon
O. iamonensis
Binomial name
Osbornodon iamonensis
E.H. Sellards, 1916
Osbornodon iamonensis.png
Approximate range of Osbornodon iamonensis based on fossil distribution