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Categories: Paleontology: Dinosaurs
Published Discovery and naming of Africa's oldest known dinosaur
(via sciencedaily.com) An international team of paleontologists has discovered and named a new, early dinosaur. The skeleton -- incredibly, mostly intact -- was found over the course of two digs, in 2017 and 2019.
Published Fossils of giant sea lizard that ruled the oceans 66 million years ago discovered
(via sciencedaily.com) Fossils of a giant killer mosasaur have been discovered, along with the fossilized remains of its prey.
Published All the better to better eat you with -- dinosaurs evolved different eye socket shapes to allow stronger bites
(via sciencedaily.com) Large dinosaur predators, such as Tyrannosaurus rex, evolved different shapes of eye sockets to better deal with high bite forces, new research has shown.
Published Prehistoric podiatry: How dinos carried their enormous weight
(via sciencedaily.com) Scientists have cracked an enduring mystery, discovering how sauropod dinosaurs -- like Brontosaurus and Diplodocus -- supported their gigantic bodies on land.
Published The speed at which spinosaurid dinosaur teeth were replaced accounts for their overabundance in Cretaceous sites
(via sciencedaily.com) Spinosaurid dinosaurs were able to develop up to three generations of teeth at the same time, a high replacement rate that explains why so many teeth of this type have been found in Cretaceous sites.
Published Plesiosaur fossils found in the Sahara suggest they weren't just marine animals
(via sciencedaily.com) Fossils of small plesiosaurs, long-necked marine reptiles from the age of dinosaurs, have been found in a 100-million year old river system that is now Morocco's Sahara Desert. This discovery suggests some species of plesiosaur, traditionally thought to be sea creatures, may have lived in freshwater.
Published Study refutes claim that T. rex was three separate species
(via sciencedaily.com) A new study refutes a provocative claim made earlier this year that fossils classified as the dinosaur Tyrannosaurus rex represent three separate species. The rebuttal finds that the earlier proposal lacks sufficient evidence to split up the iconic species.
Published A new giant dinosaur gives insight into why many prehistoric meat-eaters had such tiny arms
(via sciencedaily.com) An international team has discovered a new big, meat-eating dinosaur, dubbed Meraxes gigas, that provides clues about the evolution and anatomy of predatory dinosaurs such as the Carcharodontosaurus and Tyrannosaurus rex. Meraxes measured around 36 feet from snout to tail tip and weighed approximately 9,000 pounds.
Published Dinosaurs took over amid ice, not warmth, says a new study of ancient mass extinction
(via sciencedaily.com) There is new evidence that ancient high latitudes, to which early dinosaurs were largely relegated, regularly froze over, and that the creatures adapted -- an apparent key to their later dominance.
Published Europe's largest land predator unearthed on the Isle of Wight
(via sciencedaily.com) Palaeontologists have identified the remains of one of Europe's largest ever land-based hunters: a dinosaur that measured over 10m long and lived around 125 million years ago.
Published Bizarre meat-eating dinosaur joins 'Rogues' Gallery' of giant predators from classic fossil site in Egypt's Sahara Desert
(via sciencedaily.com) The fossil of a still-unnamed species provides the first known record of the abelisaurid group of theropods from a middle Cretaceous-aged (approximately 98 million years old) rock unit known as the Bahariya Formation, which is exposed in the Bahariya Oasis of the Western Desert of Egypt.
Published Hot-blooded T. rex and cold-blooded Stegosaurus: Chemical clues reveal dinosaur metabolisms
(via sciencedaily.com) Paleontologists have debated whether dinosaurs were warm-blooded, like modern mammals and birds, or cold-blooded, like modern reptiles. In a new paper, scientists are unveiling a new method for studying dinosaurs' metabolic rates, using clues in their bones.
Published Researchers discover overlooked Jurassic Park of lizards
(via sciencedaily.com) New research moves back the moment of the radiation of squamates -- the group of reptiles that includes lizards, snakes and worm lizards -- to the Jurassic, a long time before current estimates.
Published Precipitation helped drive distribution of Alaska dinosaurs
(via sciencedaily.com) Precipitation more than temperature influenced the distribution of herbivorous dinosaurs in what is now Alaska, according to new research. The finding discusses the distribution of hadrosaurids and ceratopsids -- the megaherbivores of the Late Cretaceous Period, 100.5 million to 66 million years ago.
Published Injured dinosaur left behind unusual footprints
(via sciencedaily.com) A set of dinosaur footprints in Spain has unusual features because the dinosaur that made the tracks had an injured foot, according to a new study.
Published T. rex's short arms may have lowered risk of bites during feeding frenzies
(via sciencedaily.com) Extinct for 66 million years, T. rex still inspires speculation about its anatomy, behavior and fierce physique. One conundrum: its peculiarly short forelimbs, which have relatively limited mobility. While scientists have suggested explanations, a paleontologist puts the proposals to the test and finds them wanting. He hypothesizes that the arms reduced in size to limit damage, possibly fatal, when a pack of T. rexes descended on a carcass with their bone-crunching teeth.
Published Mammals put brawn before brains to survive post-dinosaur world
(via sciencedaily.com) Prehistoric mammals bulked up, rather than develop bigger brains, to boost their survival chances once dinosaurs had become extinct, research suggests.
Published Dense bones allowed Spinosaurus to hunt underwater
(via sciencedaily.com) Spinosaurus is the largest predatory dinosaur known -- over two metres longer than the longest Tyrannosaurus rex -- but the way it hunted has been a subject of debate for decades. In a new paper, palaeontologists have taken a different approach to decipher the lifestyle of long-extinct creatures: examining the density of their bones.
Published Soil erosion and wildfire another nail in coffin for Triassic era
(via sciencedaily.com) New research has revealed that soil erosion and wildfires contributed to a mass extinction event 201 million years ago that ended the Triassic era and paved the way for the rise of dinosaurs in the Jurassic period.
Published Newly identified softshell turtle lived alongside T. rex and Triceratops
(via sciencedaily.com) Scientists describe the find of a new softshell turtle from the end of the Cretaceous Period.