P. Brunetlecomte et al., COMPARATIVE MORPHOMETRY OF THE FIRST LOWE R MOLAR OF THE GERBES VOLE,MICROTUS (TERRICOLA) PYRENAICUS-GERBEI (RODENTIA, ARVICOLIDAE), Mammalia, 59(2), 1995, pp. 249-254
The comparative study of the first lower molar (M(1)) morphology shows
that the one of Microtus (Terricola) pyrenaicus gerbei is quite diffe
rent from the one of M. (T.) pyrenaicus. The character analysis also s
hows that M. (T.) pyrenaicus gerbei has a less developped anterior par
t and a more open anterior loop of the M(1) that M. (T.) pyrenaicus. T
he synthesis of these analyses confirms that M. (T.) pyrenaicus gelbei
is at least a different subspecies of M. (T.) pyrenaicus.