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The physiology of dinosaurs has historically been a controversial subject, particularly their thermoregulation.Recently, many new lines of evidence have been brought to bear on dinosaur physiology generally, including not only metabolic systems and thermoregulation, but on respiratory and cardiovascular systems as well.
Psittacosaurus (/ ˌ s ɪ t ə k ə ˈ s ɔːr ə s / SIT-ə-kə-SOR-əs; "parrot lizard") [1] is a genus of extinct ceratopsian dinosaur from the Early Cretaceous of what is now Asia, existing between 125 and 105 million years ago. It is notable for being the most species-rich non-avian dinosaur genus.
Quetzalcoatlus (/ k ɛ t s əl k oʊ ˈ æ t l ə s /) is a genus of azhdarchid pterosaur that lived during the Maastrichtian age of the Late Cretaceous in North America. The type specimen, recovered in 1971 from the Javelina Formation of Texas, United States, consists of several wing fragments and was described as Quetzalcoatlus northropi in 1975 by Douglas Lawson.
Tyrannosaurus (/ t ɪ ˌ r æ n ə ˈ s ɔː r ə s, t aɪ-/) [a] is a genus of large theropod dinosaur.The type species Tyrannosaurus rex (rex meaning 'king' in Latin), often shortened to T. rex or colloquially T-Rex, is one of the best represented theropods.
Pachycephalosaurus (/ ˌ p æ k ɪ ˌ s ɛ f əl ə ˈ s ɔː r ə s /; [2] meaning "thick-headed lizard", from Greek pachys-/ παχύς-"thickness", kephalon/ κεφαλή "head" and sauros/ σαῦρος "lizard") [3] is a genus of pachycephalosaurid ornithischian dinosaur.
Treating allergy symptoms with over-the-counter medication, saline spray, and, if warranted, allergy medication or injections from your doctor, may also help reduce GI symptoms as a result.
Dinosaurs have always been recognized as an extremely varied group: over 900 non-avian dinosaur genera have been confidently identified (2018) with 1124 species (2016). Estimates put the total number of dinosaur genera preserved in the fossil record at 1850, nearly 75% still undiscovered, [ 20 ] [ 21 ] [ 22 ] and the number that ever existed ...
2024 was the worst year for gastrointestinal outbreaks on cruise ships in over a decade, thanks to a surge in norovirus, according to figures from the US Centers for Disease Control and Prevention.