EntityQ373772· pop 34· linked from 1,662 articlesPennsylvanianSign in to savesecond and final subperiod of the Carboniferous PeriodConnectionsgeologic time scaleEntityBashkirianEntityViseanEntityMoscovianEntityyearEntityDevonianEntityOrdovicianEntitySerpukhovianEntityTournaisianEntityKasimovianEntityKazakhstanCountryPennsylvaniaEntityfungiEntityAmphibiaEntityInternational Standard Book NumberEntityUral MountainsEntityclassEntitydigital object identifierEntityInternational Standard Serial NumberEntityJurassicEntityCategoriesCarboniferous geochronologyCarboniferous United StatesGeological epochsPennsylvanian geochronologyPennsylvanian (geology)