Ancestors of animals... - Answer✔️✔️-diverged from ancient fungi,
between 675 million and 800 million years ago, believed to be a
suspension feeder similar to Choanoflagellates
Choanoflagellates - Answer✔️✔️-suspension feeder similar to
animalia's common ancestor
4 distinct periods of evolution - Answer✔️✔️--neoproterozoic era
-paleozoic era
-mesozoic era
-cenozoic era
Neoproterzoic Era - Answer✔️✔️--1 billion to 542 million years ago
-known as Ediacara biota, aren't closely related to today's sponges,
alga, or animals.
Paleozoic Era - Answer✔️✔️--542-251 million years ago
-Contained Cambrian Explosion
-Cambrian period, Ordovician period, Silurian period, and Devonian
period
-Fish became top predators, arthropods became terrestrial,
amphibians and amniotes developed on land.
Cambrian period - Answer✔️✔️--led to first arthropods, chordates,
and echinoderms
2
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