About 180 million years ago, a shark likely attacked a squid-like creature eating a crustacean.
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A small desert-dwelling theropod dinosaur named Shuvuuia had excellent night vision, and its hearing was comparable to that of an owl. Like many owls, it was probably a nighttime predator.
Tiny fossils from the northern Highlands of Scotland preserve the oldest evidence of organisms with more than one type of cell.
Mosasaurus was one of the largest members of the mosasaur family, which were the top predators in the oceans during the age of dinosaurs.
A well-preserved fossil reveals that 180 million years ago, an eight-armed predator suffocated with its prey.
Primeval sea creatures share genes with humans, suggesting that we're more like ancient animals than previously thought.
A bizarre shark with wing-like side fins soared through an ancient sea 93 million years ago in what is now Mexico.
Scientists have identified the earliest primates from tiny fossilized teeth, revealing that our ancient ancestors likely lived alongside the dinosaurs in North America.
A 66 million-year-old fossilized lung belonging to a previously unknown giant coelacanth fish was recently discovered in Morocco.
More than half-a-billion years ago, ancient terrestrial fungus may have helped Earth recover from a catastrophic ice age.
Ancestors of giant Bobbit worms may have colonized the seafloor millions of years ago, building long, narrow burrows where they would wait for unsuspecting prey.
An ancient fossil has been identified as the ancestor of all starfish-like animals living on the planet today, according to a new study.
Scientists describe a new species of assassin bug from a fossil that dates to around 50 million years ago and includes the insect's intact genitals.
Fat molecules attributed to ancient sea sponges actually belonged to algae, two new studies suggest.