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Animal Infobooks I Seaworld Parks & Entertainment These fossils are interpreted as likely being early sponges. Dickinsonia costata from the Ediacaran biota (c. 635–542 MYA) is among the earliest animal species identified. Some animals are able to asexual copy, which often ends in a genetic clone of the parent. This may take place by way of fragmentation; budding, similar to in Hydra and different cnidarians; or parthenogenesis, the place fertile eggs are produced with out mating, such as in aphids. Repeated situations of mating with a close relative throughout sexual reproduction generally results in inbreeding melancholy inside a population because of the elevated prevalence of harmful recessive traits. This is a diverse group with greater than 10,000 totally different species and an enormous illustration within the fossil report. Once the dominant land vertebrates on the planet, reptiles still occupy nearly each single ecosystem outside of the extreme north and south. Animal...