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

By THIES MONTE L

Show description

Read or Download A Key to the Skulls of North American Mammals PDF

Best mammals books

Vicious: Wolves and Men in America (The Lamar Series in Western History)

Over a continent and 3 centuries, American cattle proprietors destroyed wolves to guard the beasts that provided them with foodstuff, garments, mobility, and wealth. The brutality of the crusade quickly surpassed wolves’ misdeeds. Wolves menaced estate, no longer humans, yet storytellers usually depicted the animals as starving threats to human safeguard.

Understanding the Brain Through the Hippocampus the Hippocampal Region as a Model for Studying Brain Structure and Function

This prime quality reference quantity is the results of a few up to date contributions chosen on strict clinical standards. Being of curiosity to neuroscientists more often than not, the paintings focusses on effects heightening realizing of the constitution and serve as of the CNS, while exploring the level to which the findings made within the hippocampus could be extrapolated to different mind areas.

The Gnu’s World: Serengeti Wildebeest Ecology and Life History

This can be the 1st scholarly publication at the antelope that dominates the savanna ecosystems of japanese and southern Africa. It provides a synthesis of analysis performed over a span of 50 years, frequently at the wildebeest within the Ngorongoro and Serengeti ecosystems, the place 80 percentage of the world’s wildebeest inhabitants lives.

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

Sample text

Cynomys) -Skull less massive; occipital region more elliptical; cheek teeth lighter and less expanded ............................................. (Leucocrossuromys) 15. Ammospermophilus (Fig. 21) -Postorbital processes more widespreading; interorbital and postorbital widths approximately equal; a large tubercle situated on lower side of oval or triangular infraorbital foramen; cranium not subrectangular ...................................................... 16 16. -Molars brachydont; parastyle ridges on M 1 and M 2 joining protocone without change in direction ...........................................................

13 -Zygomatic arches compressed vertically and more or less parallel .................................................................................................................. 21 13. -Upper tooth rows strongly convergent posteriorly; molars much wider than long; lambdoidal crest prominent ............................................................................... Cynomys (Fig. 20) ....... 14 -Upper tooth rows approximately parallel; molars not greatly widened; lambdoidal crest weakly to moderately 22 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) ......................................................................................................................

Download PDF sample

Rated 4.49 of 5 – based on 31 votes