566 -Nesodonopsis, Stenotephanos, Palaeolithops, Palyeidod., Eutomod., Xotod. 
6840. f deformis, Roth, 1. c., 1898, p. 47. 
5841. f lydekkeri, nom. nov. 
fEocaen. Patagonia. 
fEocaen. Patagonia. 
(4254 part .) ; Roth, 1. c., 1898, p. 47. 
speciosus, Lydekk. (nec Amegh.) — 
Familia II. f Toxodontidae. 
Subfamilia 1. f Xotodontinae. 
966. f Stenotephanos, Amegh., 1886. 
Toxodon, p., Amegh., 1885; Hyperoxotodon, Mere., 1895, 
Ameghino, Bol. Acad. Cordoba, 1886, p. 106. 
5842. f speciosus. Amegh. — (4254 exclus. f Eocaen. Patagonia. 
synon.: Lydekker). 
5843. f plicidens. Amegh. — (4255). fEocaen. Patagonia. 
967. f Palaeolithops, Amegh., 1891. 
Lith ops, Amegh., 1887 (nec Lithopsis, Scudder, 1878). 
5844. f praevius. Amegh. — (4256). fEocaen. Patagonia. 
968. f Palyeidodon, Roth, 1898. 
Roth, Revist. Mus. La Piata, 1898, p. 49. 
5845. f obtusus, Roth, 1. c., 1898, p. 49. fEocaen. Patagonia. 
969. fEutomodus, Amegh., 1889. 
Tomodus, Amegh., 1886 (nec Trautschold, 1879); 
Xotodon, p., Mere., 1895. 
Ameghino, Mam. Eos. Arg., 1889, p. 403, 916. 
f Oligocaen. 
Argentina. 
970. fXotodon, Amegh., 1887. 
Toxodon, p., Amegh., 1885; Psmdotoxodon, Moreno. 1889. 
Ameghino, Bol. Acad. Cordoba, 1885, p. 70. 
5847. f foricurvatus. Amegh. — (4258). 
5848. f cristatus. Moreno et Mercerat — (4259). 
f Oligocaen. 
Argentina. 
fMiocaen. inf. 
Argentina. 
