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JAMES KUETHER/SCIENCE PHOTO LIBRARY
One of the greatest transitions in evolutionary history was the emergence of tetrapods, or four-legged vertebrates, onto land. By about 340 million years ago, fins had become fingers and limbs, shoulder and hip joints had changed to bear weight on land, and an entire array of amphibious creatures had begun to live along the water’s edge. But an analysis of some early tetrapods now suggests that not long after they made a home on land, some species became adapted to life in the water all over again.
Aja Mia Carter at the University of Pennsylvania and colleagues focused on a group of early amphibians called temnospondyls, roughly salamander-like tetrapods that spun off a great diversity of species between 330 and 295 million years ago.
These Dinosaur Days will offer hikes with a paleontologist and a virtual lecture series all in June.
Those hikes will be guided by Julia McHugh, the paleontologist at the Dinosaur Journey museum in Fruita. The hikes will be at 9 a.m. Tuesday, June 1, and 9 a.m. Tuesday, June 8, in the area of Dinosaur Hill at the Riggs Quarry.
“Discover the site where the massive Apatosaurus was unearthed, how it shaped the Legend of Brontosaurus, and why Fruita is such a paleontology hot spot,” said information about the hikes at museumofwesternco.com.
The guided hikes cost $20 each for museum non-members, $15 each for members. To register, go to museumofwesternco.com/things-to-do/events/.
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