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trichecus virgianus

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1, a. Skull of the Morse (fossil), seen nearly in front, (Trichecus virgianus), b. View of the upper jaw teeth of the same. 2. Skull of the Sable (Mustela martes). 3, a. Jaw teeth of the Trogontherium? fossil, b. Lower jaw of the same.

1, a. Skull of the Morse (fossil), seen nearly in front, (Trichecus vi...

Public domain scan of 19th-century zoological illustration, free to use, no copyright restrictions image