A pink sponge, photographed at an aquarium today, is not unlike one of the first life forms that appeared in the Precambrian era ... which included sea anemones, corals, and jellyfish, had ...

A study published in August 2024 in the journal Precambrian ... shallow marine inland sea." This could have occurred well before the Cambrian Explosion when most animal life began to form.

As underwater chimneys called deep-sea vents release dissolved ... suggest complex multicellular life evolved as far back as 900 mya. More extensive Precambrian finds, particularly those ...

The Precambrian eon is vast ... and various asteroids -- forms from interstellar gas and dust. Prelude to life (4,550-3,900 mya) Planet Earth is very hot at its formation. As it cools and its ...