New Species of Fossil Hybodontiform Shark Identified in Japan
Paleontologists in Japan have described a new species of shark-like cartilaginous fish based on the fossilized teeth from the Late Triassic Momonoki Formation.
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Paleontologists in Japan have described a new species of shark-like cartilaginous fish based on the fossilized teeth from the Late Triassic Momonoki Formation.
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Two groups of dinosaurs moved to cooler climes during a period of climate change.
Scientists once thought of dinosaurs as sluggish, cold-blooded creatures. Then research suggested that some could control their body temperature, but when and how that shift came about remained a mystery.
Some 180 million years ago, some dinosaurs may have gained the ability to control body temperature early in the Jurassic period and thus became first warm-blooded terrestrial reptiles, as per a new...