The first birds began to appear and mammals began to make a niche for themselves.In the maritime terrain, there were large predators such as mosasaurs and plesiosaurs.In the Upper Cretaceous, the continents were already separated and had a distribution similar to the present one. The teeth of this animal were shaped like a needle, so they were fragile. Length. Wir haben in Ihrem persönlichen Profil lizenzierte Dateien, Credits und Abos gefunden. Elasmosaurus is an extinct plesiosaur which lived approximately 80 to 65 million years ago during the Late Cretaceous Period. These had a really long neck and a rather small head. servez_2build. It is a type of reproduction called “ovoviviparous”, that is, they lay eggs but they lodge them inside, and when they hatch they come out of the mother.However, within the plesiosaurs there are two morphologically well differentiated groups:Plesiosauridae.
In his defense, at the time he was an expert on lizards, which have a short neck and a long tail, and no one had seen a plesiosaur the size of After its discovery in 1868, the first scientists to study this animal thought the long neck was its tail and so put the head at the wrong end. As Elasmosaurus swam slowly over the sea floor, it would reach down to pick prey off the bottom. This genus had a snake-like neck and large wide body which resembled that […] Like most elasmosaurids, Elasmosaurushad ar… Reptiles and dinosaurs are closely related, but they have their own morphological differences.How long is it? This long neck came in useful for this reptile. In this case, it refers to the thin plates on its pelvic girdle. This is because it has the characteristics of the plesiosaurs. Kingdom Animalia > Filo … References. The skull was flat, with quite a few long, sharp teeth. Elasmosaurus ( from Greek elasmos 'thin plate' (referring to thin plates in its pelvic girdle) + σαυρος sauros 'lizard') is a genus of plesiosaur with an extremely long neck that lived in the Late Cretaceous period (Campanianstage), 80.5 million years ago.. They inhabited the Earth until what is known as the K-T (Cretaceous-Tertiary) extinction that marks the end of the Mesozoic era, also known by many as the era of the dinosaurs.Plesiosaurs have been mistakenly referred to as marine dinosaurs on several occasions. The K/T impact is named after the German who developed the theory, Kreide/Tertlär Grenze.This theory is the one which has been popularly taken almost as a fact (which really remains a theory and not an absolute truth) that many dinosaurs and other animals (among them plesiosaurs) were extinguished by a meteor shower.Knowing a little more about the characteristics of the group to which this marine reptile belongs, let’s talk about the characteristics of the Elasmosaurus.Elasmosaurus were approximately 46 feet (14.1 meters) long and 4.9 feet (1.5 meters) high. – It is classified within the Order Plesiosauria. It is a marine reptile that lived at the same time as several dinosaurs, but in no case should it be confused with one. We'll assume you're ok with this, but you can opt-out if you wish. Elasmosaurus’s neck was as long as the rest of its body. Most, if not all, have almost certainly seen a snake and/or a turtle at some time in their lives or at least know what a snake and/or a turtle is.Now, to get an idea of the general appearance of an Elasmosaurus, you have to put the snake inside the shell of the turtle and make it 20 times bigger. Weight. English: Size comparison of Elasmosaurus platyurus and a diver. The neck of elasmosaurus was 2/3 of its entire body length. In addition, typical plesiosaurs would have breathed oxygen directly from the air, i.e. The taxonomy of the Elasmosaurus . This is something really curious because generally reptiles used to deposit eggs and not live young, something more typical of mammals. It lived during part of the late Cretaceous era about 65 million years ago.