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the climates of the pre-cambrian time was?
The pre-Cambrian period (Ediacaran period) took place between 635-543 million years ago.
Early animal life, called Ediacaran biota, evolved from protists; it was previously believed early animal life included only tiny, sessile, soft-bodied sea creatures, but scientific evidence suggests more complex animals lived during this time.
Sponge-like fossils believed to represent the oldest animals with hard body parts, named Coronacollina acula, date back as far as 560 million years.
The fossils of the earliest animal species ever found were small, one-centimeter long, sponge-like creatures, dating before 650 million years, which predates the Ediacaran period.
The discovery of the fossils of the earliest animal species provided evidence that animals may have evolved before the Ediacaran period during the Cryogenian period.
Source: Boundless. “Pre-Cambrian Animal Life.” Boundless Biology. Boundless, 03 Jul. 2014. Retrieved 13 Mar. 2015 from https://www.boundless.com/biology/textbooks/boundless-biology-textbook/introduction-to-animal-diversity-27/the-evolutionary-history-of-the-animal-kingdom-165/pre-cambrian-animal-life-638-11860/