| 释义 |
Definition of elasmosaur in English: elasmosaurnounɪˈlazmə(ʊ)sɔːəˈlazməˌsôr A Cretaceous plesiosaur with a long neck shaped like that of a swan. Family Elasmosauridae, infraorder Plesiosauria: several genera, including Elasmosaurus Example sentencesExamples - The remains include the bones of dinosaurs, birds, and large marine reptiles such as mosasaurs and elasmosaurs, as well as fossilized sponges, mollusks, pine cones, and diverse fish teeth.
- Like the rest of the Plesiosauroidea, elasmosaurs had a barrel-shaped body with four paddle-shaped flippers.
- Elasmosaurus was the longest member of the elasmosaur family and in fact, the longest-known plesiosaur.
- Storrs considers this species a synonym of P. guilelmiimperatoris, while Robert Bakker asserts that it is an early elasmosaur, and transfers it to the genus Microcleidus (as M. brachypterygius).
- However, all elasmosaurs are quite similar, and extreme, in overall body morphology.
Origin Late 19th century: from modern Latin Elasmosaurus, from Greek elasmos 'beaten metal' + sauros 'lizard'. Definition of elasmosaur in US English: elasmosaur(also elasmosaurus) nounəˈlazməˌsôr A Cretaceous plesiosaur with a long neck shaped like that of a swan. Family Elasmosauridae, infraorder Plesiosauria: several genera, including Elasmosaurus Example sentencesExamples - The remains include the bones of dinosaurs, birds, and large marine reptiles such as mosasaurs and elasmosaurs, as well as fossilized sponges, mollusks, pine cones, and diverse fish teeth.
- Elasmosaurus was the longest member of the elasmosaur family and in fact, the longest-known plesiosaur.
- Like the rest of the Plesiosauroidea, elasmosaurs had a barrel-shaped body with four paddle-shaped flippers.
- However, all elasmosaurs are quite similar, and extreme, in overall body morphology.
- Storrs considers this species a synonym of P. guilelmiimperatoris, while Robert Bakker asserts that it is an early elasmosaur, and transfers it to the genus Microcleidus (as M. brachypterygius).
Origin Late 19th century: from modern Latin Elasmosaurus, from Greek elasmos ‘beaten metal’ + sauros ‘lizard’. |