Tiny crab preserved in 100-million-year-old amber lived among dinosaurs
Scientists have found the oldest aquatic animal preserved in amber and it’s the most complete crab fossil.
Meet Adratiklit boulahfa, World’s Earliest Known Stegosaur
Paleontologists in Morocco have found fossil fragments from a new genus and species of stegosaur that walked the Earth about 168 million years ago (Jurassic Period).
Size comparison of Arambourgiania (left) & Cryodrakon (right) next to a 1.8m tall human 😮
🎨 by Gabriel Ugueto, 2021
Arambourgiania is a genus of azhdarchid pterosaur from the Late Cretaceous period ... View MoreSize comparison of Arambourgiania (left) & Cryodrakon (right) next to a 1.8m tall human 😮
🎨 by Gabriel Ugueto, 2021
Arambourgiania is a genus of azhdarchid pterosaur from the Late Cretaceous period (Maastrichtian stage) of Jordan, and possibly the United States. Arambourgiania was among the largest members of its family, the Azhdarchidae, and it is also one of the largest flying animals ever known. The incomplete left ulna of the "Sidi Chennane azhdarchid" from Morocco may have also belonged to Arambourgiania.
From the relatively slender vertebra the length dimension was then selected to be compared to that of Quetzalcoatlus, estimated at 66 centimeters (26 in) long, resulting in a ratio of 1.18. Applying that ratio to the overall size, Frey and Martill in 1998 concluded that the wingspan of Arambourgiania had been 12 to 13 meters (39 to 43 ft), compared with the 10 to 11 meters (33 to 36 ft) of Quetzalcoatlus, and that Arambourgiania was thus the largest pterosaur then known. Later estimates have been more moderate, sometimes as low as seven metres.
Cryodrakon ("cold dragon") is a genus of azhdarchid pterosaur that lived during the Late Cretaceous period in what is now Canada. It contains a single species, Cryodrakon boreas, recovered from the Dinosaur Park Formation.
Cryodrakon was proportionally similar to Quetzalcoatlus and other long-necked advanced azhdarchids.
1948 Shell Oil ad by Frederick Siebel
If you ever thought rain ruined your weekend, how would you feel about rain that didn’t quit for 2 million years? That happened in the Late Triassic.
A volcano-induced rainy period made Earth’s climate dinosaur-friendly
New physical evidence links eruptions 234 million to 232 million years ago to climate changes that let dinosaurs start their climb to dominance.
An amazing masterpiece by Anthony Hutchings, shows a melanistic Smilodon populator ('knife tooth') in the late afternoon somewhere in South America, resting or possibly watching something of interest.... View MoreAn amazing masterpiece by Anthony Hutchings, shows a melanistic Smilodon populator ('knife tooth') in the late afternoon somewhere in South America, resting or possibly watching something of interest. 😮
Smilodon is a genus of the extinct machairodont subfamily of the felids. It is one of the most famous prehistoric mammals and the best known saber-toothed cat. Although commonly known as the saber-toothed tiger, it was not closely related to the tiger or other modern cats. Smilodon lived in the Americas during the Pleistocene epoch (2.5 mya – 10,000 years ago). The genus was named in 1842 based on fossils from Brazil; the generic name means "scalpel" or "two-edged knife" combined with "tooth". Three species are recognized today: S. gracilis, S. fatalis, and S. populator. The two latter species were probably descended from S. gracilis, which itself probably evolved from Megantereon. The hundreds of individuals obtained from the La Brea Tar Pits in Los Angeles constitute the largest collection of Smilodon fossils.
Ulughbegsaurus uzbekistanensis: New Species of Giant Meat-Eating Dinosaur Identified in Uzbekistan
🎨 Life reconstruction of Ulughbegsaurus uzbekistanensis and a smaller tyrannosauroid. Image credit: ... View MoreUlughbegsaurus uzbekistanensis: New Species of Giant Meat-Eating Dinosaur Identified in Uzbekistan
🎨 Life reconstruction of Ulughbegsaurus uzbekistanensis and a smaller tyrannosauroid. Image credit: Julius T. Csotonyi.
A new genus and species of carcharodontosaurian theropod dinosaur has been identified from a fossillized jawbone found in the Republic of Uzbekistan.
Carcharodontosauria is a group of medium to large-sized predatory theropod dinosaurs.
These theropods thrived on the southern supercontinent Gondwana from the Late Jurassic epoch to the end of the Cretaceous period, but disappeared on the northern supercontinent Laurasia after the Turonian stage of the Cretaceous.
They attained extreme body sizes, greater than 6 tons, rivaling those of tyrannosaurids and spinosaurids.
Considered as the apex predators in Laurasia until the mid-Cretaceous, carcharodontosaurians and other large-bodied theropods disappeared after which tyrannosauroids occupied top predatory niches during the last 20 million years of the Cretaceous period.
Scientifically named Ulughbegsaurus uzbekistanensis, the new carcharodontosaurian dinosaur roamed our planet during the Late Cretaceous epoch, between 92 and 90 million years ago.
http://www.sci-news.com/paleontology/ulughbegsaurus-uzbekistanensis-10048.html
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