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Hace 13 horas · The Cretaceous–Paleogene (K–Pg) extinction event, also known as the Cretaceous–Tertiary (K–T) extinction, was a sudden mass extinction of three-quarters of the plant and animal species on Earth, approximately 66 million years ago. The event caused the extinction of all non-avian dinosaurs.Most other tetrapods weighing more than 25 kilograms (55 pounds) also became extinct, with the ...
Hace 2 días · Diracodon Marsh, 1881. Stegosaurus ( / ˌstɛɡəˈsɔːrəs /; [2] lit. 'roof-lizard') is a genus of herbivorous, four-legged, armored dinosaur from the Late Jurassic, characterized by the distinctive kite-shaped upright plates along their backs and spikes on their tails.
Hace 4 días · From left to right: a polar bear (Ursus maritimus), a giraffe (Giraffa camelopardalis), †Paraceratherium transouralicum, †Patagotitan mayorum, two humans (Homo sapiens), †Palaeoloxodon recki, an African bush elephant (Loxodonta africana) and a white rhino (Ceratotherium simum). The largest prehistoric animals include both vertebrate and invertebrate species.
Hace 5 días · [Paleontology • 2024] Phylogenetic Position of Kinnareemimus khonkaenensis (Dinosauria: Theropoda: Ornithomimosauria) from the Lower Cretaceous of Thailand Kinnareemimus khonkaenensis Buffetaut, Suteethorn & Tong, 2009. ... American Journal of Primatology (6) Ammonite (7) Amolops (21) ...
Hace 5 días · Tyrannosaurus ( Osborn, 1905; il cui nome significa lucertola tirannica [1] ), spesso abbreviato in T. rex (diminutivo scientifico) o colloquialmente T-Rex, è un genere estinto di dinosauro teropode tyrannosauride vissuto nel Cretaceo superiore, in quello che oggi è il Nordamerica, che a quell'epoca era un continente isolato nominato Laramidia.
Hace 5 días · Tyrannosauroidea (meaning 'tyrant lizard forms') is a superfamily (or clade) of coelurosaurian theropod dinosaurs that includes the family Tyrannosauridae as well as more basal relatives. Tyrannosauroids lived on the Laurasian supercontinent beginning in the Jurassic Period.
Hace 1 día · El increíble hallazgo en China de un embrión de dinosaurio intacto que se preparaba para nacer
