Megalosaurus through centuries
Megalosaurus is a genus of large meat-eating theropod dinosaurs of the Middle Jurassic period (Bathonian stage, 166 million years ago) of Southern England. Although fos... View MoreMegalosaurus through centuries
Megalosaurus is a genus of large meat-eating theropod dinosaurs of the Middle Jurassic period (Bathonian stage, 166 million years ago) of Southern England. Although fossils from other areas have been assigned to the genus, the only certain remains of Megalosaurus come from Oxfordshire and date to the late Middle Jurassic.
Megalosaurus was, in 1824, the first genus of non-avian dinosaur to be validly named. The type species is Megalosaurus bucklandii, named in 1827. In 1842, Megalosaurus was one of three genera on which Richard Owen based his Dinosauria. On Owen's directions a model was made as one of the Crystal Palace Dinosaurs, which greatly increased the public interest for prehistoric reptiles.
The first naturalists who investigated Megalosaurus mistook it for a gigantic lizard of 20 metres (66 ft) length. In 1842, Owen concluded that it was no longer than 9 metres (30 ft), standing on upright legs. He still thought it was a quadruped, though. Modern scientists, by comparing Megalosaurus with its direct relatives in the Megalosauridae, were able to obtain a more accurate picture. Megalosaurus was about 6 metres (20 ft), weighing about 700 kilograms (1,500 lb). It was bipedal, walking on stout hindlimbs, its horizontal torso balanced by a horizontal tail. Its forelimbs were short, though very robust. Megalosaurus had a rather large head, equipped with long curved teeth. It was generally a robust and heavily muscled animal.
Tyrannosaurus rex 'Bucky' in resting position - National Museum of Nature and Science, in Tokyo, 2015 😨
Bucky is a Tyrannosaurus rex (T. rex) which means "tyrant lizard king." Bucky is a teenager alm... View MoreTyrannosaurus rex 'Bucky' in resting position - National Museum of Nature and Science, in Tokyo, 2015 😨
Bucky is a Tyrannosaurus rex (T. rex) which means "tyrant lizard king." Bucky is a teenager almost the size of an adult T. rex. Although still young, Bucky is already big, about 34 feet long and more than 10 feet tall!
A young rancher and rodeo cowboy named Bucky Derflinger discovered Bucky in 1998 while training a horse on his ranch in South Dakota.
Bucky is one of the most complete skeletons of any tyrannosaur ever found.
“They're actually nesting and laying and incubating eggs… practically at the North Pole.”
For some dinosaurs, the Arctic may have been a great place to raise a family
Fossils of baby dinosaur remains found in northern Alaska challenge the idea that some dinosaurs spent only summers in the Arctic.
A reconstructed fossil found in Mongolia of two dinosaurs fighting to the death, a Velociraptor has sunk its deadly foot claw deep into the neck of the Protoceratops but he fought back. It has thrown ... View MoreA reconstructed fossil found in Mongolia of two dinosaurs fighting to the death, a Velociraptor has sunk its deadly foot claw deep into the neck of the Protoceratops but he fought back. It has thrown the Velociraptor to the ground before it, and its jaws are locked on to the predator's right arm.
Recently found fossils include eggs, hatchlings, juveniles and adults, all preserved together.
Some dinosaurs may have lived in herds as early as 193 million years ago
A fossilized family gathering of long-necked Mussaurus may be the earliest evidence yet of herd behavior in dinosaurs.
Titanoceratops (meaning "titanic horn face") is a controversial genus of herbivorous ceratopsian dinosaur. It was a giant chasmosaurine ceratopsian that lived in the Late Cretaceous period (Campanian ... View MoreTitanoceratops (meaning "titanic horn face") is a controversial genus of herbivorous ceratopsian dinosaur. It was a giant chasmosaurine ceratopsian that lived in the Late Cretaceous period (Campanian stage, about 75 million years ago) in what is now New Mexico. Titanoceratops was named for its large size, being one of the largest known horned dinosaurs and the type species was named T. ouranos, after Uranus (Ouranos), the father of the Greek titans. It was named in 2011 by Nicholas R. Longrich for a specimen previously referred to Pentaceratops. Longrich believed that unique features found in the skull reveal it to have been a close relative of Triceratops, classified within the subgroup Triceratopsini. However, other researchers have expressed skepticism, and believe "Titanoceratops" to simply be an unusually large, old specimen of Pentaceratops.
Meet Callichimaera perplexa, Strangest Crab that Has Ever Lived
An international team of paleontologists has found the exceptionally preserved fossilized remains of an enigmatic new type of crab, Callichimaera perplexa, which lived approximately 95 million years a...
A mounted skeleton of a Denversaurus, having a run-in with a juvenile Tyrannosaurus rex, on display at the Houston Museum of Natural Science.
Denversaurus is a genus of herbivorous nodosaurid ankylos... View MoreA mounted skeleton of a Denversaurus, having a run-in with a juvenile Tyrannosaurus rex, on display at the Houston Museum of Natural Science.
Denversaurus is a genus of herbivorous nodosaurid ankylosaurian dinosaur from the Late Cretaceous of western North America. Although at one point treated as a junior synonym of Edmontonia by some taxonomists, current research indicates that it is a distinct nodosaurid genus.
The Geological Time Scale 🌋
Artwork by Ray Troll
The geological time scale (GTS) is a system of chronological measurement that relates stratigraphy to time, and is used by geologists, paleontologist... View MoreThe Geological Time Scale 🌋
Artwork by Ray Troll
The geological time scale (GTS) is a system of chronological measurement that relates stratigraphy to time, and is used by geologists, paleontologists, and other Earth scientists to describe the timing and relationships between events that have occurred throughout Earth’s history.
Evidence from radiometric dating indicates that Earth is about 4.54 billion years old. The geology or deep time of Earth’s past has been organized into various units according to events which took place in each period.
Different spans of time on the GTS are usually delimited by changes in the composition of strata which correspond to them, indicating major geological or paleontological events, such as mass extinctions. For example, the boundary between the Cretaceous period and the Paleogene period is defined by the Cretaceous–Paleogene extinction event, which marked the demise of the non-avian dinosaurs and many other groups of life. Older time spans which predate the reliable fossil record (before the Proterozoic Eon) are defined by the absolute age.
Early dinosaurs were sociable - HeritageDaily - Archaeology News
New research on a vast fossil site in Patagonia shows that some of the earliest dinosaurs lived in herds and suggests that this behaviour may have been one of the keys to the success of dinosaurs. - H...
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