Persistierende Milch-prämolaren und andere Sonderbildungen bei Marmota marmota (Linné, 1758) [Persistence de prémolaire de lait et autres formation spéciales chez la marmotte alpine].

Résumé

4 skulls of the Alpine Marmot preserved in several collections are described because they have only 2 premolars instead of 3. It is attempted to give an explanation of these anomalies. Moreover skulls of the Alpine Marmot, Red Squirrel, and other Sciuridae not seldom show an intercalate nasalia.