Early in the boring the sandstone had given place to a vein of Comanchian limestone full of minute fossil cephalopods, corals, echini, and spirifera, and with occasional suggestions of siliceous sponges and marine vertebrate bones-the latter probably of teliosts, sharks, and ganoids.
Zulatzen hasi eta berehala hareharriaren ordez kareharri komantxiarraren zain bat ageri zen, fosil ñimiñoz josia: zefalopodoak, koralak, ekinoideoak, brakiopodoak, eta, tarteka, belaki silizeoen aztarnak eta itsas ornodunen hezurrak (seguruenik, teleosteoak, marrazoak eta ganoideoak).