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5 Facts About Theropoda

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Theropoda or theropods are a dinosaur suborder characterized by hollow bones and three-toed limbs.

Dinosaurs are a diverse group of reptiles of the clade Dinosauria that first appeared during the Triassic.

Tribute to Theropod Dinosaurs by Leandro Machado Rocha

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They are generally classed as a group of saurischian dinosaurs, though a 2017 paper has put them in a proposed clade Ornithoscelida, along with the Ornithischia.

A clade is a group of organisms that consists of a common ancestor and all its lineal descendants, and represents a single "branch" on the "tree of life".

Ornithischia is an extinct clade of mainly herbivorous dinosaurs characterized by a pelvic structure similar to that of birds.

A genus is a taxonomic rank used in the biological classification of living and fossil organisms in biology.

Theropod Dinosaurs Tribute-Prey for Me. by EBLazerRex65

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Theropods were ancestrally carnivorous, although a number of theropod groups evolved to become herbivores, omnivores, piscivores, and insectivores.

Omnivore is a consumption classification for animals that have the capability to obtain energy and nutrients from materials originating from plant and animal origin.

A herbivore is an animal anatomically and physiologically adapted to eating plant material, for example foliage, for the main component of its diet.

A piscivore is a carnivorous animal that eats primarily fish.

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Theropods first appeared during the Carnian age of the late Triassic period 231.4 million years ago and included the sole large terrestrial carnivores from the Early Jurassic until at least the close of the Cretaceous, about 66 Ma.

A carnivore, meaning "meat eater", is an organism that derives its energy and nutrient requirements from a diet consisting mainly or exclusively of animal tissue, whether through predation or scavenging.

The Triassic is a geologic period and system which spans 50.9 million years from the end of the Permian Period 251.902 million years ago, to the beginning of the Jurassic Period 201.3 Mya.

The Cretaceous is a geologic period and system that spans 79 million years from the end of the Jurassic Period 145 million years ago to the beginning of the Paleogene Period 66 mya.

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In the Jurassic, birds evolved from small specialized coelurosaurian theropods, and are today represented by 10,000 living species.

Birds are a group of endothermic vertebrates, characterised by feathers, toothless beaked jaws, the laying of hard-shelled eggs, a high metabolic rate, a four-chambered heart, and a strong yet lightweight skeleton.

Coelurosauria is the clade containing all theropod dinosaurs more closely related to birds than to carnosaurs.

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