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Dinosaur news
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" What dinosaurs walked around Canada?
Plenty of dinosaur species inhabited Canada throughout the Mesozoic, too many to name here. The Dinosaur Park Formation is one particularly interesting formation located in southern Alberta. Numerous dinosaur species have been uncovered in the area, including the tyrannosaurids Daspletosaurus sp. and Gorgosaurus liberatus, dromaeosaurids (“raptors”) like Saurornitholestes, pachycephalosaurids like Stegocerus validum, hadrosaurs like Corythosaurus casuarius, ceratopsians such as Centrosaurus apertus and Styracosaurus albertensis and ankylosaurs such as Euoplocephalus tutus. You may recall the new ornithomimid, Rativates evadens, described by McFeeters et al. in early 2016. The Oldman Formation is another prominent formation home to numerous dinosaur species located in southern Alberta. You’ll find most dinosaurs found in Canada are from the late Cretaceous. Although the Morrison Formation extends to southwestern Canada, most fossils associated with the formation were located in the US. The McCoy Brook Formation in Nova Scotia, however, is home to numerous dinosaur trackways including Otozoum, Anomoepu, and Grallator, which are titles associated with specific types of trackways (clear indication that these dinosaurs did indeed walk around in Canada) from unknown species. They indicate that the area was once inhabited by sauropodmorphs (possibly Anchisaurus polyzelus) and small coelophysid-like theropods during the early Triassic and late Jurassic. ------ Paleoart by James Kuether " 
A megaraptor measuring about 33 ft (10.06 m), with claws measuring 14 inches (35.56 cm), and dated to approximately 70 million years ago (near the end of the dino's age), has been discovered at Estancia La Anita, a Cretaceous-era fossil deposit in southern Santa Cruz Province, the Patagonian region of Argentina. Slimmer and more agile than T-rex, it is thought to have used its arms and claws, rather than its jaw, as its main weapon when hunting its prey, unlike T-rex and Velociraptor: https://www.bbc.com/news/world-latin-america-52723049, https://www.foxnews.com/science/fossil-m...-argentina
To quote Newsweek, "Megaraptors were a light-bodied group of carnivorous dinosaurs, who roamed what is now South America, Asia and Australia during the Cretaceous Period (145.5 million to 66 million years ago). According to Matt Lamanna, Assistant Curator and Head of Vertebrate Paleontology at Carnegie Museum of Natural History in Pittsburgh, Pennsylvania, the family is known for its sharp teeth, low skulls and elongated limbs." https://www.newsweek.com/enormous-megara...na-1505369 Credit: Reuters  *This image is copyright of its original author
How the dinosaurs' morphologies are evolving, discovery after discovery, times after times... Sketchs are worth better than long descriptions.
" Rexy vs. Spinosaurus. Artist: @mattzilla85 "
Yes this depiction is very well made. Congratulations to the artist ! But the comments are very dumb. Fights between t-rex and spinosaurus never occured but in movie ("Jurassik park 3" and "Ice age 3") because these opponents didn't live at all at the same period and place... And I must add if the last spinosaurus's depictions are true, this predator was a 100% aquatic animal. Thus even at the same period t-rex and spinosaurus should have never met.
" Dinosaurs Were Probably in Decline Well Before Massive Asteroid Strike
The Earth was already cooling, for one thing. DINOSAURS MIGHT HAVE BEEN DYING out long before a massive asteroid struck Earth millions of years ago, killing them for good, scientists said recently. The new theory means that the beasts’ extinction likely wasn’t just because of the asteroid strike, but also a gradual consequence of the Earth’s long-term cooling, from a generally warm place to a climate that more closely resembles what we have now. Dinosaurs, scientists think, were much more suited to the warmer climates, while mammals fared better in the cooler ones. “We were not expecting this result,” Manabu Sakamoto, a paleontologist who led the new research, told the BBC. ”Even though they were wiped out ultimately by the impact of the asteroid, they were actually already on their way out around 50 million years before the asteroid hit.” Dinosaurs were first seen over 230 million years ago, going extinct around 165 million years later. (Avian dinosaurs, incidentally, probably survived the extinction event.) So was there ever a chance that we could have lived alongside a Tyrannosaurus rex? Probably not. But it’s nice to dream. Source: atlasobscura.com "
David17101944 visited this site on the Ntumbe River's bed in Chewore, Mana pools National Park, northern Zimbabwe, on the 2nd October 2014:
 (07-21-2020, 12:18 AM)Spalea Wrote: " Dinosaurs Were Probably in Decline Well Before Massive Asteroid Strike The asteroid strike could be the last straw that broke the camel's back. (08-31-2020, 09:09 PM)BorneanTiger Wrote:Of course it's a fake ! In 1880 they were unable to imagine the bipedal dinosaurs with/through their actual gait/posture depiction like in this so-called 1880 photo...(08-31-2020, 10:19 AM)Spalea Wrote: " Somewhere in Siberia, late 1880s. "
" The Joy of T. Rex: How Dinosaurs Had Sex (very tricky, when you weigh four tonnes and the most crucial part is 12 feet long) ?
Palaeontologists answer many tricky questions about dinosaurs - but perhaps the most interesting is how did 30-ton animals larger than four-storey buildings have sex. 'All dinosaurs used the same basic position to mate,' said Dr Beverly Halstead, an English researcher who was one of the first to tackle the subject. 'Mounting from the rear, he put his forelimbs on her shoulders, lifting one hind limb across her back and twisting his tail under hers.' Scientific illustrators have also attempted to capture the intriguing rituals of the huge beasts - including an illustrator who worked with Dr Halstead on a magazine article in 1988. The physical challenges involved must have been formidable. The penis of a tyrannosaur is estimated to be around 12 feet long. Kristi Curry Rogers, Assistant Professor of Biology and Geology at Macalester College in Minnesota, told the Discovery Channel. 'The most likely position to have intercourse is for the male behind the female, and on top of her, and from behind, any other position is unfathomable.’ 'I don't think there's much doubt about that,' Dr. Gregory M. Erickson, an evolutionary biologist at Florida State University, told The Huffington Post 'It must have been a hell of a thing to see.' Some experts have questioned this line of thinking and suggested that dinosaurs romped in water. Biologist Stuart Landry believes that big dinosaurs would just fall over on land and would have needed water to provide support. - Your thoughts? " Very delicate question, isn't it ? The only one possible position described above seems too categorical, doesn't sum up all. Particulary case: what about the stegosaurus' mating ? Or parasaurolophus' one ? Or any dinosaurs with an important dorsal crest ? The Spinosaurus isn't concerned since we know it would be in fact an entirely aquatic predator. But what about the others ? Were stegosaurids much more flexible with their pelvis than we thought ? Perhaps thank of this (pelvis flexibility) and a very long penis. Just imagine a couple ankylosaurus mating... I fear we can discust about that during a long time without been sure of any version. Not easyer than the angels' sex...
Back in September, paleontologists had unearthed a new species of burrowing dinosaur that once walked on two legs some 125 million years ago (during Aptian or Barremian age, in the Early Cretaceous epoch or lower Cretaceous series) in the beds of modern-day Lujiatun (Liaoning Province, China), reported Jon Haworth for ABC News. A new paper describing the species, published this month in the journal PeerJ, argues it is the most primitive ornithopod—the family of dinosaurs that includes bipedal “duck-billed” species such as Iguanodon—ever found: https://peerj.com/articles/9832/, https://www.smithsonianmag.com/smart-new...180975903/, https://abcnews.go.com/International/spe...d=73141707, http://www.sci-news.com/paleontology/cha...08860.html
Found in northeastern China’s Liaoning Province, researchers named the dinosaur Changmiania liaoningensis, after the serene postures of the two almost perfectly preserved skeletons that underpin the discovery—changmian means “eternal sleep” in Chinese. The digging dino’s near-immaculate fossilization may have been the result of an unpleasant demise. Some researchers suggest a volcanic eruption likely trapped the nearly four-foot-long Changmiania underground where it may have suffocated or starved to death. Figure 1 by Yang et al.: https://peerj.com/articles/9832/ (A) Holotype PMOL AD00114 in dorsal view; (B) anterior part of the holotype PMOL AD00114 in caudolateral view; © referred specimen PMOL LFV022 in dorsal view. Red arrows indicate the emplacement of the gastrolith clusters. One of two perfectly preserved fossil skeletons of Changmiania liaoningensis, and an artist's rendering of the species, credit: Carine Ciselet of the Royal Belgian Institute of Natural Sciences:
Small video (10 minutes long) I just come to discover. But 1000 times better than the entire Jurassic world serie and ending with the apocalypse we know. Very good reconstitution of the last species of dinosaurs having ever living on Earth
" This is the fifth short film in my "Dinosauria Animated Series". It is set 66 million years ago in Late Cretaceous North America and covers the dramatic extinction event that wiped out the non-avian dinosaurs. On the surface, this film seems like it’s just about the death of dinosaurs, but that wasn't supposed to be the focus of this film. I instead set out to create a film about the fantastic legacy of these very real animals, and the inspiration they have given so many of us. I have been dino-obsessed my whole life, and they’re my No. 1 source of creative motivation, which means they’re a huge part of who I am as a person. This film is FULL of big and small references to almost all of my previous dinosaur-related works, and the huge collection of fossils, paleo-media, and real-life experiences that lead me to create this very series! I didn’t set out to make 'The Last Tyrant' a sad and tragic film about the death of the dinosaurs. That does happen and it is sad, but what I truly wanted to set out and make was a film celebrating the way these animals lived and the lifelong effect they’ve had on me, and many, many others. Thank you all for watching! " 
A paper was published about a week ago by Hone at al detailing the discovery of a Microraptor zhaoianus with small mammal remains in its gut - the first example of a dinosaur eating a mammal ever found:
https://phys.org/news/2022-12-evidence-dinosaur-mammal.html https://www.tandfonline.com/doi/full/10.1080/02724634.2022.2144337 Quote:An international team of researchers has found the first evidence of a dinosaur eating a mammal. In their paper published in Journal of Vertebrate Paleontology, the group describes their reexamination of a fossil found more than 20 years ago. Artist impression (credit to Hans Larsson):  *This image is copyright of its original author
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