Rodentia 14 Ctenomys 12 Ctenomyidae 10 Ctenomys talarum 8 Subterranean rodent 8 rodent 8 Mammalia 6 Subterranean rodents 6 allozymes 6 Allometry 4 Body proportions 4 Caviomorpha 4 Climate 4 Geographic cline 4 Hystricognathi 4 allometry 4 body mass 4 body size 4 climate variation 4 cohort analysis 4 correlation 4 evapotranspiration 4 gene flow 4 genetic variability 4 geographical distribution 4 local populations 4 subterranean environment 4 subterranean rodents 4 tail feather 4 thermoregulation 4