The book On the Affinities of Leptarctus Primus of Leidy was written by author Wortman Jacob Lawson Here you can read free online of On the Affinities of Leptarctus Primus of Leidy book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is On the Affinities of Leptarctus Primus of Leidy a good or bad book?
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These cusps do not stand in the line ofthe long axis of the jaw, but are placed very obliquely to it. Theheel is not very prominent, but the basal cingulum is well developed, both in front and behind. As compared with the Raccoon, the secondpremolar is more complex in that it has two cusps instead of one. Inthe third premolar the posterior cusp is much better developed, andplaced more obliquely than in the corresponding tooth of _Procyon_;the heel is moreover not so broad. The first molar is no...t preserved, but judging from the size of itsroots it was decidedly the longest tooth of the series. The secondmolar was likewise bifanged but much smaller; it was placed closeagainst the base of the coronoid. The whole jaw has, relatively, a greater depth than that of theRaccoon, and is remarkably straight upon its lower border, whereas inthe recent genus it is considerably curved. The condyle is notpreserved, and the angle is somewhat damaged, but it was apparentlynot so strongly inflected as in the Raccoon.
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