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Cross section of a typical theropod dinosaur tooth in side view. All dinosaur teeth possess the same tissue types but can differ in their appearance. Various major groups of dinosaurs have been examined through histology, these include the carnivorous theropods and herbivorous groups such as the sauropods, hadrosaurs and ceratopsians.
Although perhaps little larger than a Virginia opossum, with a skull length of 12.2 centimetres (4.8 in) and a weight of 5.2 kilograms (11 lb), [2] the teeth have specialized bladelike cusps and carnassial notches, indicating that the animal was a predator; the jaws are short and massive and bear enormous, bulbous premolar teeth which appear to ...
Originally, this genus was believed to be a prosauropod because of the knife-shaped teeth found near its fossils, which fit in with the idea that prosauropods were omnivorous. Scientists now know that the teeth belonged to an unidentified theropod that may have scavenged on the Vulcanodon carcass. Vulcanodon is now known to be a true sauropod.
Lips protect teeth from drying out and they help preserve the enamel. Since dinosaur teeth are often found with well-preserved enamel, Reisz concluded that dinosaurs likely had a protective set of ...
While present, dinosaur eggshell is very rare in the Dinosaur Park Formation and is only found in two different microfossil sites. These sites are distinguished by large numbers of pisidiid clams and other less common shelled invertebrates, like unionid clams and snails. This association is not a coincidence, as the invertebrate shells would ...
A new study says a discovery at Ashdown Brickworks helped unearth a community of dinosaurs.
Neornithischia ("new ornithischians") is a clade of the dinosaur order Ornithischia.It is the sister group of the Thyreophora within the clade Genasauria.Neornithischians are united by having a thicker layer of asymmetrical enamel on the inside of their lower teeth.
Here's what they came up with, starting with changing those "sweet-looking teeth." Barney's makeover has dinosaur experts scratching their heads: 'I don't even know where to start with it' Skip to ...