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"The History of Animal Evolution". Plant and Animal Evolution. University of Waikato. Archived from the original on 2016-06-27 Sequence of Animal Evolution; Yeo, Dannel; Drage, Thomas (2006). "History of Life on Earth". Archived from the original on 2015-03-15; Exploring Time. The Science Channel. 2007
The history of life on Earth traces the processes by which living and extinct organisms evolved, from the earliest emergence of life to the present day. Earth formed about 4.5 billion years ago (abbreviated as Ga, for gigaannum) and evidence suggests that life emerged prior to 3.7 Ga. [1] [2] [3] The similarities among all known present-day species indicate that they have diverged through the ...
This was the last major animal to be tamed as a source of milk, meat, power, and leather in the Old World. Lascaux aurochs, Stone Age [2] 3500 BC. Sumerian animal-drawn wheeled vehicles and plows were developed in Mesopotamia, the region called the "Fertile Crescent." Irrigation was probably done using animal power.
The timeline of human evolution outlines the major events in the evolutionary lineage of the modern human species, Homo sapiens, throughout the history of life, beginning some 4 billion years ago down to recent evolution within H. sapiens during and since the Last Glacial Period.
First Sponge-like animal: similar to early colonial foraminiferan Horodyskia, earliest ancestors of Sponges were colonial cells that circulated food sources using flagella to their gullet to be digested. Kaigas (c. 750 Ma): first thought to be a major glaciation of Earth, however, the Kaigas formation was later determined to be non-glacial. [24]
SEE ALSO: Meet the happiest animal on Earth. 14-30,000 BC: Dogs. 8500 BC: Sheep and Cats. 8000 BC: Goats. 7000 BC: Pigs and Cattle. 6000 BC: Chickens. Check out these furry animals: 5000 BC ...
The Mesozoic Era began about 252 million years ago in the wake of the Permian-Triassic event, the largest mass extinction in Earth's history, and ended about 66 million years ago with the Cretaceous–Paleogene extinction event, another mass extinction that killed off non-avian dinosaurs, as well as other plant and animal species.
Ctenophores are one of, if not the, oldest animals on Earth — quite possibly a sister to all other animals in the tree of life, so “they provide a really unique opportunity to study ...