Alligator thomsoni is an extinct species of alligator that existed during the Early Miocene period. Their range was principally in what is now known as Nebraska, United States.[1][2]
| Alligator thomsoni ↓ | |
|---|---|
Scientific classification 
| |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Reptilia |
| Clade: | Archosauromorpha |
| Clade: | Archosauriformes |
| Order: | Crocodilia |
| Family: | Alligatoridae |
| Genus: | Alligator |
| Species: |
†A. thomsoni
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| Binomial name | |
| †Alligator thomsoni Mook, 1923 | |
Alligator thomsoni is a member of the subfamily Alligatorinae, within the larger family Alligatoridae. It is closely related to the living American alligator, as shown in the cladogram below:[3][4]
| Alligatoridae |
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The average measurement for the skull of a A. thomsoni is 363.0 x 223.0 in millimeters. Based on the length, the estimated body mass 67.8 kg.[1]
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