https://sci.waikato.ac.nz/evolution/AnimalEvolution.shtml

Earth's History & Evolution, Image ... DNA evidence suggests that the first eukaryotes evolved from prokaryotes, between 2500 and 1000 million years ago. ... soft-bodied multicellular animals appear in the fossil record for the first time. ... Previously scientists believed that animals did not begin to colonise the land until the ...

https://www.independent.co.uk/news/science/first-animals-appear-earth-mystery-solved-scientists-snowball-bacteria-a7896641.html

Aug 16, 2017 ... New research has shed fresh light on how animals first appeared on the Earth. It is a story spanning hundreds of millions of years, of entire ...

https://www.bbvaopenmind.com/en/science/bioscience/what-were-the-first-animals-on-earth/

Nov 5, 2018 ... ... the emergence of the first animals over the surface of the Earth such as ... that discovered the abundance of cholesterol in Dickinsonia did not ...

https://www.newscientist.com/article/dn17453-timeline-the-evolution-of-life/

Jul 14, 2009 ... Did you know mammals evolved before flowering plants? Find more ... There are all sorts of ways to reconstruct the history of life on Earth. Pinning down .... The first true vertebrate – an animal with a backbone – appears.

https://en.wikipedia.org/wiki/Timeline_of_the_evolutionary_history_of_life

This timeline of the evolutionary history of life represents the current scientific theory outlining ... The first known mass extinction in earth's history was the Great Oxygenation ... Bacteria develop primitive forms of photosynthesis which at first did not ... 580–500 Ma, Most modern phyla of animals begin to appear in the fossil ...

https://en.wikipedia.org/wiki/Evolutionary_history_of_life

The evolutionary history of life on Earth traces the processes by which living and fossil ..... Evidence suggests the first RNA molecules formed on Earth prior to 4.17 Ga. ..... it revealed animals, such as Opabinia, which did not fit into any known phylum. ... and why it happened and why it appears unique in the history of animals.

http://naturalhistory.si.edu/education/teaching-resources/life-science/early-life-earth-animal-origins

Learn what fossil evidence reveals about the origins of the first life on Earth, from ... However, the body plans of most Ediacaran animals did not look like modern ...

https://www.washingtonpost.com/news/speaking-of-science/wp/2017/08/17/the-first-animals-evolved-during-the-absolute-worst-time-on-earth/

Aug 17, 2017 ... The first animals evolved during the absolute worst time on Earth ... long for complex life to appear, according to Brocks, a biogeochemist at the ...

https://www.livescience.com/4880-shock-animal-earth-surprisingly-complex.html

Apr 9, 2008 ... Earth's first animal was the ocean-drifting comb jelly, not the simple sponge, according to a new find that has shocked scientists who didn't ...

https://www.sciencedaily.com/releases/2017/08/170816134727.htm

Aug 16, 2017 ... Research has solved the mystery of how the first animals appeared on Earth, a pivotal moment for the planet without which humans would not ...