C. natator skeleton, Canadian Museum of Nature, Ottawa, Ontario
Scientific classification
Domain:
Eukaryota
Kingdom:
Animalia
Phylum:
Chordata
Class:
Reptilia
Order:
†Choristodera
Suborder:
†Neochoristodera
Genus:
†Champsosaurus Cope, 1877
Species
C. albertensis Parks, 1927
C. ambulator Brown, 1905
C. annectens Cope, 1876 (nomen dubium) (type)
C. dolloi Sigogneau-Russell, 1979
C. gigas Erickson, 1972
C. laramiensis Brown, 1905
C. lindoei Gao & Fox, 1998
C. natator Parks, 1933
C. norelli Brownstein, 2022
C. tenuis Erickson, 1981
Synonyms
C. australis Cope, 1881 [nomen vanum]
C. brevicollis Cope, 1876 [nomen vanum]
C. inelegans Parks, 1933
C. inflatus Parks, 1933
C. profundus Cope, 1876 [nomen vanum]
C. puercensis Cope, 1882 [nomen vanum]
C. saponensis Cope, 1882 [nomen vanum]
Champsosaurus is an extinct genus of crocodile-like choristodere reptile, known from the Late Cretaceous and early Paleogene periods of North America and Europe (Campanian–Paleocene). The name Champsosaurus is thought to come from champsai, (χαμψαι) said in an Ancient Greek source to be an Egyptian word for "crocodiles", and sauros, (σαύρος) Greek for "lizard". The morphology of Champsosaurus resembles that of gharials, with a long, elongated snout. It was native to freshwater environments where it likely preyed on fish, similar to living gharials.
fish, similar to living gharials. Champsosaurus was the first member of the Choristodera to be described. Champsosaurus was named by Edward Drinker Cope...
internal skull anatomy of choristoderes is only known for Champsosaurus. The braincase of Champsosaurus is poorly ossified at the front of the skull (anterior)...
polytomy in recent studies. Neochoristodera contains the named genera Champsosaurus, Ikechosaurus, Kosmodraco, Liaoxisaurus, Mengshanosaurus, Simoedosaurus...
Hyphalosaurus. Hyphalosaurus is related to the large, crocodile-like Champsosaurus and the smaller, lizard-like Monjurosuchus. Its closest relative was...
mosasaur Plioplatecarpus, the turtle Boremys and the diapsid reptile Champsosaurus. A fair number of mammals lived in this region, which included Turgidodon...
Globidens timorensis, lamniforme sharks, coelacanths and the choristodere Champsosaurus. The earliest historical record about Timor island is the 13th-century...
neosuchian crocodyliformes. During the Late Cretaceous the neochoristodere Champsosaurus was widely distributed across western North America. Due to the extreme...
a very large Acipenser sturgeon, as well as the large choristoderes Champsosaurus and Kosmodraco. Numerous terrestrial fauna, including large mammals...
Skeleton of Champsosaurus, a choristodere, the latest surviving order of extinct reptiles. The last known choristoderes are known from the Miocene, around...
Palaeosaniwa), a wide range of turtles, crocodilians, and the fish-eating Champsosaurus. Mammal fossils from the park are relatively rare and consist of isolated...
of fully aquatic freshwater predators, the neochoristoderes such as Champsosaurus, also have forward-faced eyes, as opposed to the dorsally positioned...
contemporaneous, Simoedosaurus is not closely related to the North American Champsosaurus, instead it appears to be most closely related to Tchoiria and Ikechosaurus...
predator of the fauna. The second largest reptile is the champsosaur Champsosaurus gigas. C. gigas is unusual among Paleocene reptiles in that it is larger...
have been greater than those of various species of the choristodere Champsosaurus. A later review by Efimov and Storrs (2000) retained the two as separate...
Champsosaurus, a gharial-like choristodere which survived the Cretaceous-Paleocene extinction event. Choristoderes may represent the fifth group of archosauromorphs...
choristoderans are known from the Paleocene: The gharial-like neochoristoderans Champsosaurus—the largest is the Paleocene C. gigas at 3 m (9.8 ft), Simoedosaurus—the...
and fruits. Tooth marks attributed to multituberculates are known on Champsosaurus fossils, indicating that at least some of these mammals were scavengers...
thought to have a similar diet to another neochoristoderan reptile, Champsosaurus, due to morphology of the skull. It would hunt in freshwater environments...
from the Latin magnum (large) and cornum (horn). Unlike the well known Champsosaurus, Kosmodraco had an exceptionally brevirostrine skull with the blunt...
Remains of the following Choristoderes have been found in the formation: Champsosaurus (at least 3 species) Cteniogenys sp. cf. antiquus (possibly another...
Horseshoe Canyon, while freshwater environments were populated by turtles, Champsosaurus, and crocodilians like Leidyosuchus and Stangerochampsa. Dinosaurs dominate...
Lepisosteus, the crocodylomorph Leidyosuchus, and the choristodere Champsosaurus. Timeline of ceratopsian research Brown, Caleb M.; Henderson, Donald...
Horseshoe Canyon, while freshwater environments were populated by turtles, Champsosaurus, and crocodilians like Leidyosuchus and Stangerochampsa. Dinosaurs dominate...
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