mass extinction News

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Fossils Indicate Earliest Dinosaurs Were Size of a Cat

(Oct. 6) -- Paleontologists say they've found the oldest evidence of the emergence of dinosaurs -- 250-million-year-old fossilized footprints that suggest the earliest ones were small, cat-size animals that walked on all fours. "We describe the indisputably oldest fossils of the dinosaur lineage: footprints from the Early...

Study: Mass Extinctions Could Shake Up Marine Life

(Sept. 3) --The rate at which animals and plants are going extinct could drastically alter life in the Earth's seas, according to a new study. Mass extinctions throughout history have altered the structure of life in the seas, with dominant creatures being toppled and others rushing in to take their place, creating a...

Background on mass extinction

An extinction event (also known as: mass extinction; extinction-level event (ELE), or biotic crisis) is a sharp decrease in the diversity and abundance of macroscopic life.

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