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Before the Cambrian period, many life forms had soft bodies. These didn't left many fossil evidence of their existence. So, we don't know for sure if the 'Cambr
by marcodiego 5y ago
Before the Cambrian period, many life forms had soft bodies. These didn't left many fossil evidence of their existence. So, we don't know for sure if the 'Cambrian explosion' was really an explosion or if it was not much different in terms of diversity than the previous period.
- wolverine876 5y ago> we don't know for sure To emphasize, we have a pretty good idea, but evidence is a bit limited. > the 'Cambrian explosion' was really an explosion or if it was not much different in terms of diversity than the previous period It was certainly an explosion, regardless of what happened before: The first: hard structures (as you note: bones, shells, etc.), vision, legs, metazoa (multicellular animals) - including the ancestors of almost all current species, chordata (phylum containing vertebrates), etc. etc. In the land of the blind, the trilobite was royalty.