permo-
combining form 
Usage: usually capitalized 
Etymology: International Scientific Vocabulary, from Permian (I)  
 : Permian and  — especially in the names of geologic strata
< Permocarboniferous >
< Permopennsylvanian >
< Permotriassic >
< Permocarboniferous >
< Permopennsylvanian >
< Permotriassic >