File:The cat - an introduction to the study of backboned animals, especially mammals (1881) (20398856128).jpg

Title: The cat : an introduction to the study of backboned animals, especially mammals
Identifier: catintroduction00miva (find matches)
Year: 1881 (1880s)
Authors: Mivart, St. George Jackson, 1827-1900
Subjects: Cats; Anatomy, Comparative
Publisher: New York : Scribner's
Contributing Library: The Library of Congress
Digitizing Sponsor: The Library of Congress

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CHAP. XII.) DIFFERENT KINDS OF CATS. 437 § 19. Yet another miocene genus has been described * by Professor Cope. It is named Pogoxodqn, and its skull is about one-sixth, smaller than that of the tiger. " The canine is large and compressed, as in Machcerodus, and has serrulate anterior and posterior cutting edges." The symphysis is much widened to protect the canines. It differs from the Macbamodonts in having an additional inferior pre- molar tooth. The skull of this animal is singularly elongated, and there are three premolars in the lower jaw, while the width of the
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Fig. 189.—Skull of Pogonodon platycopis (Cope), from Oregon. diastema between the upper canine and the first premolar (which is in place) is such as to seem as if another small premolar may have existed. A very curious and exceptional eocene form of cat has been named Emmilus.f It differs from all other known felines in having only four incisors in the lower jaw, and a pair of small canines sepa- rated by a very long diastema from the next teeth, which consist only of one premolar and one sectorial true moiar. The lower jaw is enormously widened towards its symphysis to protect the large upper canines. It represents the characters of a flesh-eating, pre- dacious animal of the cat-kind, carried out to an extreme degree. Professor Cope considers Eusmilus as forming the culminating deve- lopment of the Machserodont type of structure (Fig. 190). § 20. A genus named JElurodon, has been founded by Professor Leidy $ on an upper sectorial tooth found by Dr. Hayden at the Loup River, Nebraska. It closely resembles the corresponding tooth of the cheetah in the abortion of the internal cusp. A genus termed Limnofeiis has been instituted § to designate * See the American Naturalist for February, 1880, p. 143, and for Decem- ber, 1879, p. 7986. + By M. Gervais in the 2nd part of his Zoologie et Paleontologic Generales, 1876, pp. 53 and 54, plate 12. See also Filhol, Becherches sur les Phosphorites de Quercy, Ann. des Sc. Geologiques, vol. viii., 1877, p. 321, and vol. vii., 1876, p. 153, plate 28. % Journal of the Acad, of Nat. Sc. of Philadelphia ; Mammals of Nebraska, p. 68, plate 1, figs. 13 and 14. § American Journal of Science and Arts, vol. iv., August, 1872. See also Silliman's Journal, 3rd series, vol. iv., 1872, p. 202.

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