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

Nov 5, 2018 ... 575 million years ago, the Avalon explosion gave place to the emergence of the first animals over the surface of the Earth such as Dickinsonias ...

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 ...

http://explorecuriocity.org/Explore/ArticleId/166/who-were-the-very-first-animals-to-set-foot-on-the-earth-166.aspx

Jan 23, 2012 ... But the first animals on earth actually appeared about 400 million years earlier than dinosaurs and they were discovered right here in Canada!

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

Compared to prokaryotic organisms such as bacteria, plants and animals have a .... The first tetrapods were amphibians, such as Ichthyostega, and were closely ...

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 ... Life on Earth was dominated by simple bacteria up until about 650 ...

https://allthatsinteresting.com/first-animal-on-earth

New research shows that the simple sea sponge was the very first animal on Earth. It's been confirmed: the first animal to ever evolve on Earth is… the sea ...

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 Event 2.4 billion years ago. ..... structures that attract insects and other animals to spread pollen;other angiosperms were pollinated by wind or water.

https://news.nationalgeographic.com/news/2012/120207-oldest-animals-sponges-earliest-science-evolution/

Feb 9, 2012 ... (Also see "Was The Humble Sponge Earth's First Animal?") The simple setup seems to have worked. The fossil record indicates Otavia ...

https://www.nsf.gov/news/news_summ.jsp?cntn_id=111408

Apr 10, 2008 ... And the First Animal on Earth Was a ... Evolutionary history of the comb jelly reveals surprising clues about Earth's first animal. Photo of a comb ...

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 ... New research aims to explain how complex life emerged during a period when Earth was ravaged by ice and roasted by volcanoes.