JURASSIC PARK Los Archivos Perdidos Dilophosaurus Epoca: Jurasico temprano, hace unos 200-190 millones de años Distribucion: America del Norte, Asia Longitud: 7 metros Peso: 500 kgs Dieta: Carnívoro Apodado "escupidor", el Dilophosaurus es uno de los dinosaurios mas representativos de Jurassic Park. Recibe el apodo porque puede lanzar una sustancia negra y viscosa a los ojos de su victima hasta a una distancia de varios metros. Esta sustancia es de hecho un coctel de siete enzimas toxicas distintas, las cuales causan intenso dolor y ceguera, dejando a la victima indefensa ante el ataque del Dilophosaurus. Tambien puede inocular su veneno mordiendo y masticando a la presa antes de soltarla y esperar a que muera. Al parecer, los individuos jovenes son mas propensos a escupir. El Dilophosaurus suele ser esquivo y de habitos nocturnos; no obstante, esta entre los dinosaurios mas llamativos por sus crestas vivamente coloreadas y la gola de piel membranosa que puede extender cuando esta a punto de atacar, como la capucha de una cobra. Aunque es un veloz corredor, en Jurassic Park es principalmente un cazador de emboscada que vive en las zonas selvaticas mas inaccesibles. TRIVIA: Los cientificos de Jurassic Park solo se enteraron de que el Dilophosaurus podia escupir su veneno cuando un obrero del parque fue alcanzado de lleno en la cara. Nunca se pudieron localizar las glandulas venenosas del Dilophosaurus. EXTREMADAMENTE PELIGROSO! Veneno hemolitico.
JURASSIC PARK The Lost Files Dilophosaurus Age: Early Jurassic, (200-190 mya) Range: North America, Asia Length: 7 meters Weight: 500 kgs Diet: Carnivore Nicknamed "spitter", Dilophosaurus is one of the most representative Jurassic Park dinosaurs. It gets its nickname from its ability to spray a black, gooey substance to the eyes of its victim to a distance of several meters. This substance is actually a cocktail of seven different toxic enzymes, which cause extreme pain and blindness, leaving the victim defenseless against the Dilophosaurus' attack. It can also inoculate its venom by biting and chewing prey and then releasing, waiting for it to die. It seems that young individuals are more prone to spit. Dilophosaurus is elusive and nocturnal; however, it ranks among the most spectacular dinosaurs due to its vividly colored crests and its frill of membranous skin that can be expanded like a cobra's hood when the animal is ready to attack. Although it is a fast runner, in Jurassic Park it is mostly an ambush predator that lives in the most remote jungle zones. TRIVIA: The scientists of Jurassic Park only realized that the Dilophosaurus could spit its venom when one of the park's workers was hit in the face by the animal's spittle. The Dilophosaurus' venom glands were never found. EXTREMELY DANGEROUS! Hemolytic venom.
Un grupo de Mahakala (raptores miniatura) intenta derribar a un Psittacosaurus sin ser alcanzados por su potente pico o por sus puas venenosas... NOTA- Me di cuenta muy tarde de que los Mahakala vivieron millones de años despues que Psittacosaurus. Ya que...
A group of Mahakala (miniature raptors) tries to bring down a Psittacosaurus while avoiding its powerful beak and its poisonous bristles... NOTE- I realized too late that Mahakalas lived millions of years after Psittacosaurus. So what...
Dilophosaurus wetherilli is named for the explorer John Wetherill, whose nephew informed the fellows at the University of California's Museum of Paleontology (UCMP) of the finds of several specimens near Kayenta, Arizona in the then-Triassic near-Chinle rocks as they were known. Two skulls have been recovered and noted to date, but the first was in pretty terrible condition, while the second preserved a pair of crests. This gave Samuel P. Welles, then at the UCMP, the honor of naming one of the more famous of Jurassic Park dinosaurs Megalosaurus wetherilli (John Wetherill's great lizard), and then Dilophosaurus wetherilli (John Wetherill's two-crested lizard).
Here, the skulls are shown with jaws agape (left) and closed (right).
When this animal was first announced several years ago, the peculiar jaw and skull features suggested it was highly reminiscent of spinosaurs, dinosaurs not uncommon it would seem in the Southern Hemisphere. Hailing from the Late Cretaceous of northern Argentina, in South America, the fossils represent a dromaeosaurid-like animal on par with the rather more famous Utahraptor from the USA, but also the less famous but no less large Achillobator from Mongolia.
The long skull and several features of the vertebrae connect it to Buitreraptor, also seen here: [link] , as well as the large (not not this large) Unenlagia.
Unlike these animals, Austroraptor has very, very short arms, suggesting this animal was a head-first predator, more adept at snatching and grabbing with its jaws than with its hands. And this may be one of the most curious things about it, when it all comes down to it.
Single-handedly, Carnotaurus sastrei has redevised the image of plasticity in theropod dinosaurs, the concept that most dinosaurs follow familiar guidelines, even when distantly related. Among theropods, small arms would mean a large head in a predator, which is seemingly at odds with this animal found in northern Patagonia, southern Argentina.
The name translates to "meat bull," an allusion to both being a predator as well as the curious and unique lateral horns, extensions of the cranial roofing bones, which project outwards above the eye sockets. Curiously, unlike most abelisaurids, a group to which this taxon belongs (as well as closely related Majungasaurus crenatissimus -- [link]), Carnotaurus has what seems like a short spine and long legs, with a neck/back combined length less than twice the height of the body at the hip (and this is using a conservative measurement for the missing legs); this makes Carnotaurus an ungainly looking animal.
Holidays... it´s raining a lot here... so I´m using my free time at home to finish this Concavenator corcovatus piece that I´ve started when this bizarre theropod was announced... full body version soon...
This is the other hypothesis about what Balaur bondoc might have looked like. Or at least that's what I was trying to do. The problem is, I just couldn't take this guy seriously. Despite trying hard to make a good life reconstruction, I ended up with these incredibly stupid-looking vegan dodo things. There's another, who eats horsetails while smiling stupidly, but it's not even worth finishing.
So here's my dodo raptor. You get what you order, or something like that. At least it was fun to do.
A baby Tyrannosaurus rex with downy feather covering.
Adult tyrannosaurs were (at least mostly) scaly. Since they were apparently descended from feathery ancestors, as fossils like Dilong and Sinosauropteryx show, it's entirely possible that they retained some feathers in at least some part of their lives. Since small animals are more suspectible to cold, young tyrannosaurs would have benefited from insulation. They might have just shed the feathers when they grew, or left some of them here and there.
I am obsessed with feather evolution at the moment.
Anatomy of the little guy was based on the juvenile in these video reconstructions: [link] which is probably based on the tiny "Jordan theropod", a Tyrannosaurus that died when it was only 2 years old.
This is not a serious scientific reconstruction. It's just meant to be cute and fluffy and show that baby tyrannosaurs had ridiculous leg proportions.