sent2null space

A common mistake made by people describing the Cambrian era of 545 mya is to assume that the incredible diversity of forms found in the shale strata that dates to this period is some how unique to the period. This mistake falls from the assumption that because we don't see the same level of diversity in later rock strata that it means there was less diversity in general over all possible living environments , but this doesn't follow. In the roughly 540 million years since the Cambrian age , the Earth's geology has changed significantly along with the animal forms, they did this while radiating into new habitats that were different from those in which the Cambrian creatures thrived. The homogeneity of the limited living environment of these early forms bares a contribution to the apparent diversity of animal forms found in the strata. We know that the early seas were incredibly homogeneous and it makes sense that as animal forms proliferated that they would team across...