Get A Key to the Skulls of North American Mammals PDF

By THIES MONTE L

ISBN-10: 1465291717

ISBN-13: 9781465291714

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Extra resources for A Key to the Skulls of North American Mammals

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I 1 . ~~ f \ \ • '" • ........ . , , " .. .. I . t ·-- .. -·• ' I '.. • I ... , ... ~ . ·'' .... t... ~ ~r , -; . •. -· •.! ' .. ,, "'... ,. . , "' ~ ... ~ ""o I ' J.. _N.. ~ , ·· ... _ , ••... ,... '.... c. . \ 1' Fig. 83. Diphylla Greatest length of skull 23mm Fig. 84. _, ....... , n ·-·--- ~ Fig. 85. Macrotus Greatest length of skull 22mm Fig. 86. Leptonycteris Greatest length of skull 27mm 51 molars well developed; rostrum short and wide; zygomata complete ...........................................................................

Nyctinomops (Fig. 93) 12. Myotis (Fig. 94) -Dental formula not as above, teeth less than 3 8 .......................................................... 13 13. -Dental formula I2/3 C 1/1 P2/3 M3/3, total of 36 teeth .............................................. 14 -Dental formula not as above, teeth less than 36 .......................................................... 16 14. -Auditory bullae not much enlarged; rostrum broad, concave on each side; forehead nearly flat .................................

Zapus Greatest length of skull 24mm Fig. 40. Napaeozapus Greatest length of skull 24mm Fig. 41. Rattus* Greatest length of skull 45mm Fig. 42. Mus* Greatest length of skull 22mm 32 with the lophs forming a sigmoid pattern; zygomatic plate cut back dorsally, revealing infraorbital canal on emarginate dorsal border .................................................................. Sigmodon (Fig. 45) -Molars without lophs, cusps normal; infraorbital canal not emarginate dorsally (except in Oryzomys and Cricetus) ......................................................................................................................

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A Key to the Skulls of North American Mammals by THIES MONTE L


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