Alligator mcgrewi

Alligator mcgrewi is an extinct species of alligator described by K.P. Schmidt in 1941. They lived in the Early Miocene period, and their range was principally in what is now Nebraska, United States.

Classification
Alligator mcgrewi is a member of the subfamily Alligatorinae, within the larger family Alligatoridae. It is related to the living American alligator and Chinese alligator, as shown in the cladogram below:

Measurements
The average measurements for the skull of A. mcgrewi are 145 x 96 in millimeters. Based on the length, the estimated body mass was 3 kg.