Ediacaran fossils show handedness

Careful morphological and sedimentary analysis of Ediacaran specimens at Nilpena suggests some of Earth’s earliest complex animals not only moved but showed a consistent lateral preference — an ancient example of behavioural asymmetry. The methodological walkthrough in the video demonstrates how observation, 3D reconstruction and sediment context let scientists infer behaviour from 500‑million‑year‑old impressions. — If behaviour (not only anatomy or genetics) can be robustly read from early fossils, that changes how we define and search for life — including criteria used in astrobiology and in public debates about what counts as 'animal' or 'life'.