Rice-Sized Ancient Worms are the Ancestors of All Animals

March 24, 2020 - General
An artist's rendering of the ancient wormlike creature called Ikaria wariootia. Source: Sohail Wasif/UCR

Geologists have discovered the first ancestor on the family tree that contains most animals today, including humans. The ancient worm-like creature, Ikaria wariootia, is the earliest bilaterian, or organism with a front and back

Source: origins

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