For he may ask in vain where are the numberless transitional links which must formerly have connected the closely allied or representative species, found in the successive stages of the same great formation?
Izan ere, badu eskubiderik galdetzeko, alferrik, non dauden formazio handi beraren hurrenez hurreneko estratuetan aurkituriko espezie ahaide edo errepresentagarriak behiala bigiztatu bide zituzten kontaezinezko iragaitzazko katenbegiak.