Answer: permian
AnswerCrossword Clue
PERMIANPeriod marked by the largest mass extinction in earth's history
PERMIANAmphibian geologic period
permianrelating to the last period of the Palaeozoic era
permiansubfamily of Finnic, comprising the modern languages Udmurt and Komi, spoken in northeastern European Russia, and fragmentary attestations of an earlier language (Old Permic), dating from the 15th century
permiannoting or pertaining to a period of the Paleozoic Era occurring from about 280 to 230 million years ago and characterized by a profusion of amphibian species
permianthe Permian Period or System