Variation and complexity of the enamel pattern in the first lower molar of the Field vole, Microtus agrestis (L., 1761) (Mammalia: Rodentia: Arvicolinae)

Abstract

The variation in complexity of the lower fi rst molar, M1, of the Field vole, Microtus agrestis, is investigated. Two possible routes towards increased complexity are described and are depicted schematically. It is concluded, that increased tooth complexity enhances masticatory effi ciency.