Kaszab Zoltán (szerk.): A Magyar Természettudományi Múzeum évkönyve 64. (Budapest 1972)

Jánossy, D.: Middle Pliocene microvertebrate fauna from the Osztramos Loc. 1. (Northern Hungary)

Measurements of the upper teeth: A. oligodon Polgárdi* A. topali sp. n. Osztramos 1. length width length width 2," 2,6 2,5 2,7 2,9 2,9 M

1 2,5 2,8 2,7 2,9 2,8 2,7 * I measured the teeth of the original material myself. Measurements of the lower teeth: A. oligodon Polgárdi* A. topali sp. n. Osztramos 1. length width length width 2.SO 1.68 3.08 1.51 2.80 1.50 3.36 1.42 2.74 1.50 3.18 1.40 2.80 1.54 3.20 1.68 3.00 1.70 3.20 1.68 2.70 1.60 3.35 1.35 2.80 1.50 3.22 1.52 2.70 1.50 3.20 1.50 1.90 1.05 1.75 0.98 1.90 1.05 1.56 0.90 1.80 1.05 1.80 108. 1.70 1.05 Length of first antemolar 1. 1.7 2. 1.05 0.84 Length of second antemolar 2.01 2.1 2.1 * I measured the teeth on the original material myself. One feature may be interpreted as a sign of the evolutionary reduction of the dentition: the posterior margin of the lower large incisor (outer view) lies below M

l in the Osztramos-form against the Polgárdi-form ; in this latter it just reaches the posterior part of the second antemolar. Relationships: A comparison with the only known species of the genus, Amblycoptus oligodon KORMOS, 1926, was made in detail above. KORMOS (1926)