![]() ![]() Ernst Stromer published an article naming the spinosaurus in 1915. The first partial remains were found in 1912 by Richard Markgraf in western Egypt. Rex was a predator or purely a scavenger.Īrchaelogists have discovered two types of spinosaurus: spinosaurus aegyptiacus and spinosaurus maroccanus. There is also some debate over whether the T. Paleontologists are undecided whether the spinosaurus primarily caught animals on land or ate fish. It also had a long, heavy tail to balance out its huge head and torso. It had a short, muscular neck, a huge head, powerful legs, and two short forelimbs with two clawed fingers each. Rex is one of the largest land carnivores that ever lived. ![]() These are known as “sails.” Although paleontologists originally believed that spinosaurus walked on two legs, new research has suggested that they walked on four legs, at least occasionally. Tall spines grew out of its back vertebrae. The spinosaurus had a long skull with a narrow snout, somewhat like a crocodile. Estimates of its weight have varied from 4.5 tonnes to 7.2 tonnes. (By that time, spinosaurus had become extinct.) The largest specimen found is 12.3 meters long and 4 meters tall at the hips. Rexes roamed the earth, they were among the largest dinosaurs on the planet. Different estimates have placed the spinosaurus between 12.8 and 18 meters long, and weighing between 7 and 20.9 tonnes. Spinosaurus was the largest carnivorous dinosaur herbivores argentinosaurus and sauroposeidon were probably larger than the spinosaurus. Rex was one of the last species of dinosaurs to exist before mass extinction. Rex lived during the upper Cretaceous Period, around 67 to 65.5 million years ago. Spinosaurus lived during the lower Albian to lower Cenomanian stages of the Cretaceous period, 112 to 97 million years ago. From left to right: spinosaurus, carcharodauntosaurus, giganotosaurus and T.Rex Era Massive bulk unlike its close kin and short arms with two fingers each.Ī comparison of the sizes of various species of dinosaurs. Isolated teeth were found in 1877, but the species was described in 1905 by H. The T-Rex's tail was powerful and pointed. Long, stiff tail perpendicular to the ground for balance. Long and paddle-like, possibly indicating an aquatic lifestyle. Tail held above the ground most of the time. Serrated, railroad spike shaped teeth, continually replaced, largest teeth 12 inches (30 cm) and made to crush bone.Ģ large arms, both weaponized with viciously hooked claws.Ģ small arms, couldn't reach its mouth, two-fingered "hands" very muscular for their size, about 2.5 feet. Extremely wide with front facing eyes giving it binocular vison.Ĭone-like teeth possibly visible from outside. Heavy, thick skull mouth full of serrated round teeth. Spinosaurus could have used their skulls for hunting fish, since the nostrils were high up on the skull. Narrow skull like crocodiles of today and were 1.6 meters (6 feet) long. More than 30 partial Tyrannosaurus specimens have been found since.Ĥ,000 to 7,000 kg (about 9,000 to 15,000 pounds) About 13 feet at the hip when fully grown.įound in 1913, they were destroyed in World War II in 1942. It is derived from the Greek turannos (‘tyrant’) and sauros (‘lizard’).ġ7-21 feet. The name Tyrannosaurus means "tyrant lizard". It is derived from the Latin spīna (“a thorn a prickle, spine”) + σαῦρος (saûros, “lizard”) (Two other debatable species exist, but a recent rebuttal indicates that Tyrannosaurus is monospecific, meaning it contains one species.) Its legs were extremely big and powerful. The T-Rex's powerful tail allowed it to move quickly could "run" up to 19 mph. Preyed on armored herbivorous dinosaurs, other T. Fossils of a close relative indicate it may have eaten some smaller animals like pterosaurs.Ĭarnivorous. Likely a shoreline predator, using its long arms to swipe fish out of the water. Ate fish and herbivores like Olorotitan and Galimimus. United States (Texas, New Mexico, Colorado, Wyoming, South Dakota, North Dakota, and Montana) and Canada (Alberta, Saskatchewan). Late Cretaceous Period (67 million years ago) Mid-Cretaceous Period (95 million years ago) Differences - Similarities - Spinosaurus versus Tyrannosaurus comparison chart ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |