Mammal Skulls, UMMZ
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- muskrat
Ondatra zibethicus
- muskrat
- muskrat
Ondatra zibethicus
- muskrat
- muskrat
Ondatra zibethicus
- muskrat
- muskrat
Ondatra zibethicus
- muskrat
- mountain goat
Oreamnos americanus
- mountain goat
- duck-billed platypus
Ornithorhynchus anatinus
- duck-billed platypus
- duck-billed platypus
Ornithorhynchus anatinus
- duck-billed platypus
- duck-billed platypus
Ornithorhynchus anatinus
- duck-billed platypus
- duck-billed platypus
Ornithorhynchus anatinus
- duck-billed platypus
- duck-billed platypus
Ornithorhynchus anatinus
- duck-billed platypus
- duck-billed platypus
Ornithorhynchus anatinus
- duck-billed platypus
- duck-billed platypus
Ornithorhynchus anatinus
- duck-billed platypus
- duck-billed platypus
Ornithorhynchus anatinus
- duck-billed platypus
- variable pocket gopher
Orthogeomys heterodus
- variable pocket gopher
- variable pocket gopher
Orthogeomys heterodus
- variable pocket gopher