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ENSDEXC OF PAMILIES AND SUBPAMILIES. 
NoTE.—An asterisk (*) indicates that the group is extinct. A double dagger ([) indicates that 
the name is not available on account of being à descriptive term not based on a genus, or because 
the generic name from which it is formed is preoccupied. 
No attempt is made to mark names which are unavailable because the genera on which they are 
based have lapsed into synonymy. 
Small black-face type is used for names originally proposed as subfamilies and afterwards raised to 
family rank. 
Italic type is used for variants of both family and subfamily names. 
A. 
* Abderitesida AmEGHINO, 1889. Marsupialia. 
Act. Acad. Nac. Cien., Cordoba, VI, pp. 268, 269, 1889. 
Abderitide LypEKKER, Zool. Record for 1890, XXVII, Mamm., p. 51, 1892. 
t Acanthionidae ScuvrzE, 1900. Insectivora. 
Zeitschr. für Naturwiss., Stuttgart, LX XIII, p. 214, Dec. 19, 1900. 
Includes Zrinaceus. 
* Acaremyinae AMEGHINO, 1902. Glires, Erethizontide. 
Bol. Acad. Nac. Cien. Córdoba, XVII, pp. 111-112, May, 1902 (sep. pp. 43-44). 
* Aceratheriina OsnBonN, 1892. Ungulata, Perissodactyla. 
Bull. Am. Mus. Nat. Hist., N. Y., IV, p. 93, Sept. 30, 1892. 
* Achaenodontinae Zirret, 1893 Ungulata, Artiodactyla. 
Handb. Palaeont., IV, 2te Lief., p. 334, 1893. 
Achaenodontida HT AECKEL, Syst. Phylogenie Wirbelth., III, pp. 552, 555, 1895. 
Achznodontidzx MatrHew, Bull. Am. Mus. Nat. Hist., N. Y., XII, p. 34, Apr. 8, 
1899. 
t{Achede Burnett, 1830. Edentata. 
Quart. Journ. Sci., Lit. & Art, XXVIII, for Oct.-Dec., 1829, p. 351, 1830. 
Includes Unaus, Acheus, and Megatherium. 
* Accelodidae AMEGHINO, 1901. Ungulata, Litopterna. 
Bol. Acad. Nac. Cien. Córdoba, XVI, p. 364, July, 1901 (sep. p. 18). 
* Acotherulide LypEkxEn, 1883. Ungulata, Artiodactyla. 
Palzeont. Indica, ser. X, II, pt. 5, p. 146, 1883. 
* Acyonidee AMEGHINO, 1889. Marsupialia. 
Act. Acad. Nac. Cien., Córdoba, VI, p. 894, 1889; Revista Argentina Hist. Nat., 
I, entr. 3a, p. 147 footnote, June 1, 1891. 
* Adapide Tnourssanr, 1879. Primates. 
- 
Revue et Mag. de Zool., 3* sér., VII, pp. 223, 225, 1879. 
* Adapisoricidze ScmuLossERn, 1887. Insectivora. 
Die Affen, Lemuren, Chiropt., Insect., etc., Europ. Tertiürs, in Beitr. Paliont. 
Oester.-Ungarns, VI, pp. 91, 138, 1887. 
Adenotine (‘Biyrn’) Jerpon, 1874. Ungulata, Artiodactyla. 
JERDON, Mamm. India, p. 282, 1874. 
