Pseudosuchia facts for kids

Kids Encyclopedia Facts
Pseudosuchia
Temporal range: Lower TriassicHolocene
Fossil range 250 mya – present
Ornithosuchidae
Suchia
Scientific classification
Kingdom: Animalia
Class: Sauropsida
Subclass: Archosauria
Infraclass: Pseudosuchia
Synonyms

Crocodylotarsi Benton & Clark, 1988

Pseudosuchia ("false crocodiles") is one of two major divisions of archosaurs. It includes living crocodilians. It also includes archosaurs more closely related to crocodiles than to birds: "crocodile-line archosaurs".

Pseudosuchia is one of the two "daughter" clades of the Archosauria. It includes a group of superficially crocodile-like prehistoric reptiles from the Triassic period. These are relatives of living crocodiles, but more distant than the archosaurs.

Description

The skull is often massive. The snout is narrow and often long. The neck is short and strong. The standing position may be a typical reptilian sprawl. More often it is an erect stance like dinosaurs or mammals, though done a different way. The body is often protected by two or more rows of armored scutes. Many crurotarsans get to lengths of three metres or more.

Evolution

Saurosuchus
Mounted skeleton of the Triassic species Saurosuchus galilei

Pseudosuchians appeared in the late Lower Triassic. By the late Middle Triassic they were the dominant land carnivores. Their great time was the Upper Triassic, during which time their ranks included a number of carnivore groups, and one group of herbivores.

The end Triassic extinction caused the extinction of most pseudosuchians. The ancestors of modern-day crocodiles survived. A study published in 2010 suggests volcanic eruptions changed the climate, causing a mass extinction that wiped out the dinosaurs' main competitors. Furthermore, this allowed the dinosaurs to succeed them as the dominant terrestrial carnivores and herbivores.

As the Mesozoic progressed, more typically crocodile-like forms evolved. Dinosaurs were the dominant animals on land, but the proto-crocodiles flourished in rivers, swamps, and the oceans. These early crocodiles had far more diversity they have today. With the end Cretaceous extinction, the dinosaurs became extinct, except the birds, while the crocodilians continued with little change. Today, the crocodiles, alligators, and gharials are the surviving representatives of this lineage.

Archosauriformes 

Proterosuchidae ProterosuchusDB flipped.jpg




Erythrosuchus Erythrosuchus.png




Vancleavea Vancleavea white background.jpg




ProterochampsiaPseudochampsa life restoration white background.jpg




Euparkeria Euparkeria white background.png


 Crurotarsi 

Phytosauria Smilosuchus adamanensis flipped.jpg


 Archosauria 

Avemetatarsalia (bird-line archosaurs)Meyers grosses Konversations-Lexikon - ein Nachschlagewerk des allgemeinen Wissens (1908) (Antwerpener Breiftaube).jpg


 Pseudosuchia

Ornithosuchidae Ornithosuchus BW white background.jpg


 Suchia 

Gracilisuchus Gracilisuchus BW white background.jpg



Turfanosuchus Turfanosuchus NT White Background.jpg




Revueltosaurus Revueltosaurus.jpg



Aetosauria Desmatosuchus spurensis flipped.jpg





Ticinosuchus Ticinosuchus BW white background.jpg


 Paracrocodylomorpha 

Poposauroidea Poposaurus gracilis (1) flipped.jpg


 Loricata 

Prestosuchus Prestosuchus11DB.jpg




Saurosuchus Saurosuchus BW white background.jpg




Batrachotomus Batrachotomus1DB.jpg




Fasolasuchus




Rauisuchidae Postosuchus kirkpatricki flipped.jpg



CrocodylomorphaDescription des reptiles nouveaux, ou, Imparfaitement connus de la collection du Muséum d'histoire naturelle et remarques sur la classification et les caractères des reptiles (1852) (Crocodylus moreletii).jpg



















Pseudosuchia Facts for Kids. Kiddle Encyclopedia.