Although we now know that organic beings appeared on this globe, at a period incalculably remote, long before the lowest bed of the Cambrian system was deposited, why do we not find beneath this system great piles of strata stored with the remains of the progenitors of the Cambrian fossils?
Gaur egun badakigun arren izaki organikoak gure lurgloboan kalkulaezinezko antzina-antzinako garaietan, sistema kanbriarreko azken geruzak metatu baino askoz lehenago agertu zirela, zergatik ez dugu aurkitzen sistema honen azpian kanbriar fosilen arbasoen hondakinez osaturiko estratu pilo handirik?