Gas bubbles effervesce from a mound of muck on the seafloor in a deep submarine canyon off the west coast of Canada. Microbes beneath the sediment belch the bubbles after feasting on the ancient remains of algae, sea critters and their poop: a primordial stew that’s been simmering since long before humans walked the Earth.
This gassy oasis attracts an odd collection of critters. Worms...
BRISTOL, England — Paleontologists have unearthed the nearly complete remains of an immense ichthyosaur with serrated teeth, an evolutionary innovation that would have rendered the behemoth the top predator in its ecosystem.
The newly described marine creature, whose remains were discovered at a remote site in central Nevada, lived about 240 million years ago, at a time early in...