Home Previous Random Next Search
meaning: "Hollow tail"
Named By: Othniel Charles Marsh in 1879
Time Period: Late Jurassic, 153-150 Ma
Location: USA, Wyoming - Morrison Formation
Size: Estimated to be about 2.4 meters long
Diet: Carnivore
Fossil(s): Partial post cranial skeleton
Classification: | Chordata | Reptilia | Dinosauria | Saurischia | Theropoda | Coelurosauria | Coeluridae |
Also known as: | Coelurus agilis | Elaphrosaurus agilis |

Coelurus ( si-LEWR-as) is a genus of coelurosaurian dinosaur from the Late Jurassic period (mid-late Kimmeridgian faunal stage, 153-150 million years ago). The name means "hollow tail", referring to its hollow tail vertebrae (Greek koilos, koilos = hollow + oura, oura = tail). Although its name is linked to one of the main divisions of theropods (Coelurosauria), it has historically been poorly understood, and sometimes confused with its better-known contemporary Ornitholestes. Like many dinosaurs studied in the early years of paleontology, it has had a confusing taxonomic history, with several species being named and later transferred to other genera or abandoned. Only one species is currently recognized as valid: the type species, C. fragilis, described by Othniel Charles Marsh in 1879. It is known from one partial skeleton found in the Morrison Formation of Wyoming, United States. It was a small bipedal carnivore with elongate legs.

Read more about Coelurus at Wikipedia
PaleoCodex is a weekend hack by Saurav Mohapatra