Choristodera (from the Greek χωριστός chōristos + δέρη dérē, 'separated neck' [2]) is an extinct order of semiaquatic diapsid reptiles that ranged from the Middle Jurassic, or possibly Triassic, to the Miocene (168 to 20 or possibly 11.6 million years ago).

Neochoristodera is a lineage of specialised crocodile -like fully aquatic choristodere reptiles. Noted for their long jaws and large size, these animals were predominant across the Northern Hemisphere, occurring in freshwater and coastal environments …

2019年1月11日 · Choristodera are freshwater aquatic reptiles known from the Middle Jurassic to the Miocene. Their fossil record shows a peak in diversity in the Early Cretaceous of eastern Asia, most notably in the Jehol Biota of China but also in Japan and Mongolia.

2023年8月17日 · Here, we describe an exceptionally well-preserved specimen of Champsosaurus lindoei from the Two Medicine Formation of Montana, USA—one of the few occurrences of the genus within the formation, and the first confirmed occurrence of C. lindoei outside of Dinosaur Provincial Park and its vicinity.

Choristodera is an extinct (Middle Jurassic to Miocene) group of aquatic diapsid reptiles that typically occurred as part of a mesic Laurasian vertebrate assemblage (including fish, frogs, salamanders, turtles and crocodiles) in relatively warm, temperate climates (occasionally sub‐tropical areas: Matsumoto & Evans, 2010). The group is ...

This category contains all articles concerning the various reptiles of the extinct order Choristodera. Wikimedia Commons has media related to Choristodera. This category has only the following subcategory. The following 20 pages are in this category, out of 20 total. This list may not reflect recent changes.

2017年9月1日 · We provide updated information on the record of Early Cretaceous choristoderes from Siberia (4 geological units, 10 localities). We discuss the taxonomic affinities, phylogenetic positions and distribution of the Early Cretaceous Siberian choristoderes.

Choristodera is an order of semi-aquatic diapsid reptiles which ranged from the Middle Jurassic, or possibly Late Triassic, to at least the early Miocene. Choristoderes have been found in North America, Asia, and Europe. The most common fossils are typically found from the Late Cretaceous to the lower Eocene.

Choristoderans do share one other feature with crocs. They survived the KT boundary. They became extinct only in the Eocene, possibly even the Oligocene. Their ultimate extinction may have been the result of any number of factors: falling temperatures and the evolution of …

Choristodera is an order of extinct semi-aquatic diapsid reptiles which ranged from the Middle Jurassic, or possibly Late Triassic, to at least the Early Miocene. Choristoderes have been found in North America, Asia, and Europe.