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Leporidae

RODENTIA Wombat Aye-aye Leporidae North American Rodent Families Protrogomorphous Aplodontidae Hystricomorphous Erethrizontidae Sciuromorphous Sciuridae Castoridae Myomorphous Heteromyidae Geomyidae Muridae Dipodidae Aplodontidae Molars with spines Cranium flattened D-V

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Leporidae

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  1. RODENTIA Wombat Aye-aye Leporidae

  2. North American Rodent Families • Protrogomorphous • Aplodontidae • Hystricomorphous • Erethrizontidae • Sciuromorphous • Sciuridae • Castoridae • Myomorphous • Heteromyidae • Geomyidae • Muridae • Dipodidae

  3. Aplodontidae • Molars with spines • Cranium flattened D-V • Auditory bullae flask shaped • Interorbital region narrow • Sciurognathus • Protogomorphous

  4. Aplodontidae Aplodontia rufa MOUNTAIN BEAVER

  5. Erethizontidae Erethizon dorsatum PORCUPINE Infraorbital foramen round and larger than foramen magnum

  6. Castoridae Castor fiber BEAVER

  7. Skull with prominent postorbital process + Four lower molariform teeth

  8. Glaucomys Sciuridae Tamiasciurus Sciurus Tamias

  9. Sciuridae Marmota Spermophilus

  10. Heteromyidae Infraorbital foramen connected through opening on rostrum Geomyidae Infraorbital foramen NOT connected through opening on rostrum

  11. Infraorbital foramen on or near zygomatic plate X Infraorbital foramen on side of rostrum, anterior to zygomatic plate

  12. Heteromyidae KANGAROO RATS, KANGAROO MICE, POCKET MICE Large auditory bullae Wide zygomatic arch Small auditory bullae Narrow zygomatic arch Large auditory bullae Narrow zygomatic arch Pocket mouse Kangaroo rat Kangaroo mouse

  13. Heteromyidae KANGAROO RATS, KANGAROO MICE, POCKET MICE Perognathus Microdipodops Dipodomys

  14. Geomyidae POCKET GOPHERS

  15. Dipodidae Four upper, three lower cheekteeth Zapus JUMPING MOUSE

  16. Muridae 1/1 0/0 0/0 3/3 Murinae Arvicolinae Sigmodontinae

  17. Arvicolinae Ondatra Microtus sp. VOLE Lemniscus SAGEBRUSH VOLE

  18. Sigmodontinae Peromyscus sp. DEER MOUSE Onychomys sp. GRASSHOPPER MOUSE Neotoma cinerea WOODRAT Reithrodontomys sp. HARVEST MOUSE

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