Crocodilia is an order of mostly large, predatory, semiaquatic reptiles, known as crocodilians. They first appeared 95 million years ago in the Late Cretaceous period and are the closest living relatives of birds, as the two groups are the only known survivors of the Archosauria. Members of the order's total group, the clade Pseudosuchia, appeared about 250 million years ago in the Early Triassic period, and diversified during the Mesozoic era. The order Crocodilia includes the true crocodiles, the alligators and caimans, and the gharial and false gharial. Although the term 'crocodiles' is sometimes used to refer to all of these, crocodilians is a less ambiguous vernacular term for members of this group.
The family Alligatoridae of crocodylians includes alligators and caimans
The Salientia are a total group of amphibians that includes the order Anura, the frogs and toads, and various extinct proto-frogs that are more closely related to the frogs than they are to the Urodela, the salamanders and newts. The oldest fossil "proto
Oviraptoridae is a group of bird-like, herbivorous and omnivorous maniraptoran dinosaurs. Oviraptorids are characterized by their toothless, parrot-like beaks and, in some cases, elaborate crests. They were generally small, measuring between one and two
Tuchengzi Formation
The Tuchengzi Formation is a geological formation in China whose strata span the Tithonian to Berriasian ages. Dinosaur fossils, particularly footprints, have been found from the formation
Ceratopsidae is a family of ceratopsian dinosaurs including Triceratops, Centrosaurus, and Styracosaurus. All known species were quadrupedal herbivores from the Upper Cretaceous. All but one species are known from western North America, which formed the
Crocodiles or true crocodiles are large semiaquatic reptiles that live throughout the tropics in Africa, Asia, the Americas and Australia. The term crocodile is sometimes used even more loosely to include all extant members of the order Crocodilia, which
Crimson-breasted shrike
The crimson-breasted shrike or the crimson-breasted gonolek,, or the crimson-breasted boubou, is a southern African bird. It has black upper parts with a white flash on the wing, and bright scarlet underparts. The International Union for Conservation of
Advertising in biology
Advertising in biology means the use of displays by organisms such as animals and plants to signal their presence for some evolutionary reason
Peter Paillou
Peter Paillou was a British artist best known for his paintings of birds, many of which were used as book illustrations
Pimelodella brasiliensis
Pimelodella brasiliensis is a species of three-barbeled catfish of the family Heptapteridae. It is endemic to the Paraíba do Sul river basin in Brazil, although there are unconfirmed records from elsewhere. This species reaches a total length of 18.0 cm