File:Guide leaflet (1901) (14765839915).jpg

Identifier: scienceguide1630amer (find matches)
Title: Guide leaflet
Year: 1901 (1900s)
Authors: American Museum of Natural History
Subjects: American Museum of Natural History Natural history
Publisher: New York : The Museum
Contributing Library: American Museum of Natural History Library
Digitizing Sponsor: IMLS / LSTA / METRO

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rmediate betweenthe two types. The limbs and feet are also intermediate. Itis probable, therefore, that the Dogs and Raccoons are derivedfrom a common ancestral stock. Specimens found in Europe in-dicate that the Bears are likewise derived from this commonstock, and that the three families have diverged, the Dogs becom-ing terrestrial flesh-eaters, living largely in open country, theBears omnivorous and living in the woods, the Raccoons omniv-orous and arboreal. FOSSIL CARMlORA 21 CaniDjB, or Dogs. The living species of Canidae Wolves, Coyotes, Foxes arefound only in the most recent deposits (Pleistocene). A \ variety of extinct species is known, sonic of \vi ich are th<tors ^i mo lern forms, while others belong to side branches wi ichhave not survived. Most remarkable of these si Le branches werethe Amphieyons or Bear-like Dogs, some of which were of hugesize, equalling the modern Polar Bear—see skull an:! backboneof Dinocyon in wall-case Xo. 8. A large series of skulls of vari-
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FIQ. 15. SKULL OF DINOCYONA gigantic extinct doj from the Upper Miocene of Texas. One-fourth natural size ous extinct Dogs of the Oligocene and Miocene epochs is shownin the table-case. These indicate the evolution of the modernspecies from animals much more like the Civets in proportionsand in the character of their teeth. It has been possible to trout the probable direct lineage of at least two of the modogs, the Dhole of India, and certain South American fithrough these North American fossil species. Other fossil sj«belong to races of Canids now extinct. The increase in brain capacity from ancient to modern ani-mals is well shown in this series of skulls. All ancient Dogs hadsmall brains of inferior organization to their modern descendants. ; THE AMERI EUM JOURXAL : m 7modern - The brartxm; t a* of the tedi iter. Tbtbcxs of 1 Ca rn 7 . I .: i: - t. in thev - . ■ in Amen tit the same table-Mi-ST eli : i, Cone pat us. skulls. are m r f medium size i aquatic. Theon fish; the E terr

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