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fossils
Unconformity: Where Billions of Years Vanish from Stone
An unconformity is a surface in the rock record where a gap in geological time separates two layers of stone, spanning millions to...
Iterative Evolution: When Species Re-Evolve the Same Traits
Iterative evolution is the repeated emergence of similar traits from the same ancestral lineage at different points in geological time.
Fossilization Process: How Organisms Become Fossils
Fossilization is the set of physical and chemical processes preserving organisms in Earth's crust, typically within sedimentary rock.
Cambrian Explosion: When Animal Life Took Shape
The Cambrian Explosion is the rapid diversification of animal life that began approximately 538.8 million years ago, producing most major animal body plans...
Moroccan Fossils Capture Humanity's Last Shared Ancestor With Neandertals
A jawbone preserved during Earth's last magnetic flip reveals the African roots connecting modern humans to extinct cousins.
