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Collagen Switch Turns Fish Fins Into Limb-Like Structures
2+ hour, 49+ min ago (83+ words) When the first fish lineage crawled onto land some 375 million years ago, its fins had to be remodeled into limbs capable of bearing weight. Evolutionary biologists have long focused on the genes that pattern the skeleton—Hox clusters, Sonic hedgehog,…...
Why is this 560-million-year-old fossil so rare?
3+ day, 18+ hour ago (648+ words) One of the oldest known 3D animal fossils dating back 560 million years has been found in a sheep field. The astonishing discovery of the creature that looked like a "goo-filled bag" when it was alive was made in northern Norway. Scientists…...
Bizarre squid relative found in Wyoming is unlike anything seen before
15+ hour, 7+ min ago (840+ words) A bizarre belemnite fossil from Wyoming has been identified as a new species, revealing the thickest known member of this ancient squid relative group. There’s a fossil in a Wyoming museum drawer that spent two decades being, essentially, a mystery…...
Genesis of Paleo at Princeton: 150 Years of Princeton Paleontology
1+ mon, 2+ day ago (409+ words) 150 Years of Princeton Paleontology brings real fossils from the University’s Geosciences collection, alongside the scientific publications describing them, to tell the story of the scientific lineage that founded modern vertebrate paleontology. On a hot June day in 1876, three Princeton undergraduates…...
Teeth Reveal Four Adaptive Zones Shaping Carnivore Evolution
1+ day, 3+ hour ago (762+ words) For more than a century, paleontologists and evolutionary biologists have marveled at the way terrestrial mammalian carnivores keep reinventing the same body plans....
Ichthyosaurs Had Surprisingly Dense Ribs, New Study Finds | Sci.News
1+ day, 12+ hour ago (267+ words) New research from the Natural History Museum at the University of Oslo suggests ichthyosaurs’ rib cages may have done a job modern whale ribs don’t: acting as ballast to help them dive....
Imagine not having wings | Paleontology
2+ day, 9+ hour ago (46+ words) K.J. Genualdo • about 8 hours ago Zach Sweat • 13 days ago Zach Sweat • 16 days ago Phillip Hamilton • 8 months ago Uploaded by KimmyDude about 7 hours ago Resolution: (979px x 1441px) File size: 437 KB 27 views (27 from today) Uploaded about 7 hours ago...
A fossil feather from the age of dinosaurs may explain why only some birds survived
2+ day, 6+ hour ago (813+ words) Paleontology can be quite physical. In 2016, David DeMar was doing field work in the rocky badlands of Montana in what's known as the Hell Creek Formation. "We all get down on our hands and knees," he recalls. "And I start…...
Global Team Boosts Radiocarbon Dating with Marine Fossils
2+ day, 2+ hour ago (643+ words) Sedimentation is more important than other factors in the 'time averaging' of marine fossils The investigators analysed more than 7,500 fossils, which were collected from a variety of oceanic environments around the world ANSTO has contributed to a large international study…...
The earliest placental mammals may have lived in pairs alongside the dinosaurs
2+ day, 11+ hour ago (557+ words) The earliest placental mammals may have been far more social than previously thought. A phylogenetic model has shown that their common ancestor was largely solitary, but living in pairs was already part of its potential social repertoire. The distant common…...