Crocodilia - Encyclopedia.com
2018年6月11日 · Crocodilia (crocodilians; class Reptilia, tesubclass Archosauria) An order that includes the crocodiles, Alligatoridae (alligators and caimans), and Gavialidae (gavials), derived from thecodontian (Thecodontia) ancestors and closely related to the dinosaurs and pterosaurs.
Crocodilians (Crocodiles, Alligators, Caimans, and Gharials)
CrocodiliansFamily: Gharials Family: Alligators and Caimans Family: Crocodiles and False Gharials (Crocodiles, alligators, caimans, and gharials) Source for information on Crocodilians (Crocodiles, Alligators, Caimans, and Gharials): Grzimek's Animal Life Encyclopedia dictionary.
Crocodiles, Alligators, Caimans, and Gharials: Crocodylia
CROCODILES, ALLIGATORS, CAIMANS, AND GHARIALS: CrocodyliaPHYSICAL CHARACTERISTICSThe order Crocodylia, also known as the crocodilians, includes 23 species of the most feared and most fascinating animals on the planet.
Crocodile - Encyclopedia.com
2018年5月23日 · crocodile, large, carnivorous reptile [1] of the order Crocodilia, found in tropical and subtropical regions. Crocodiles live in swamps or on river banks and catch their prey in the water. They have flattened bodies and tails, short legs, and powerful jaws.
Reptile - Encyclopedia.com
2018年6月8日 · The reptiles include more than 6,000 species grouped into four orders: the turtles (Chelonia), the snakes and lizards (Squamata), the crocodiles and alligators (Crocodilia), and the tuataras (Sphenodonta), large lizardlike animals found only on islands off the coast of New Zealand. A number of other reptilian orders are now extinct.
Reptiles | Encyclopedia.com
Reptiles The class Reptilia includes over 6,000 species grouped into four orders: the turtles (Chelonia), the snakes and lizards (Squamata), the crocodiles and alligators (Crocodilia), and the tuataras (Sphenodonta). Other, now extinct, reptilian orders included Earth’s largest terrestrial animals, and some enormous marine creatures.
Archosauria - Encyclopedia.com
2018年6月8日 · Archosauria (class Reptilia) A subclass of diapsid reptiles that includes the orders Crocodilia, Ornithischia, Saurischia, Pterosauria, and Thecodontia. Thecodontians were ancestral to the other groups and appeared at the base of the Triassic. Archosaur is derived from the Greek arkho, to rule, and saura, lizard.
Gavial - Encyclopedia.com
2018年5月29日 · gavial (gā´vēəl), large reptile of the crocodile [1] order, found in rivers from Pakistan to Myanmar. Also called gharial, the gavial (Gavialis gangeticus) is distinguished from the crocodiles and alligators [2] by its extremely long, slender, parallel-sided snout.
Anura (Frogs and Toads) | Encyclopedia.com
Evolution and systematics. Anurans (frogs and toads) usually are divided into two informal groups. Of these groups, the archaeobatrachians include the basal living families Ascaphidae, Leiopelmatidae, Bombinatoridae, Discoglossidae, Pipidae, Rhinophrynidae, Megophryidae, Pelobatidae, and Pelodytidae as well as the fossil family Paleobatrachidae.
Alligator - Encyclopedia.com
2018年6月11日 · alligator, large aquatic reptile of the genus Alligator, in the same order as the crocodile [1]. There are two species—a large type found in the S United States [2] and a small type found in E China.