Theropoda

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Theropoda

[thi′räp·əd·ə]
(paleontology)
A suborder of carnivorous bipedal saurischian reptiles which first appeared in the Upper Triassic and culminated in the uppermost Cretaceous.

Theropoda

 

a suborder of saurischian dinosaurs. The suborder embraced more than ten families, which were united in two superfamilies (or infraorders): Coelurosauria and Carnosauria. Coelurosaurs, relatively small in size, had developed anterior extremities and a rather small skull; late forms lacked teeth. Carnosaurs, giant predators with reduced anterior extremities, had a huge skull and powerful teeth.

Theropods were the principal group of terrestrial predatory vertebrates of the Mesozoic (Middle Triassic to the end of the Cretaceous). Some may have fed on social insects, such as termites and ants, or even on the fruits of trees. They walked on two legs. Remains of theropods are known from Mesozoic deposits of all continents; in the USSR, remains have been found in Kazakhstan, Middle Asia, and Transbaikalia.

REFERENCE

Osnovy paleontologii: Zemnovodnye, presmykaiushchiesia i ptitsy. Moscow, 1964.
References in periodicals archive ?
Thousands of feathered dinosaurs have been discovered, with most belonging to the theropod branch of the family tree.
Chilesaurus is the first herbivorous theropod, a lineage that includes mainly predatory dinosaurs, from the southern hemisphere.
Yet the research team believed Chilesaurus to represent a new type of theropod -- "an evolutionary jigsaw puzzle that will generate debate among palaeontologists," according to Novas.
Therizinosaurs, lived about 70 million years ago, and had huge, round guts; stumpy legs; a long neck; and a turtlelike head and beak, and were herbivores despite being members of the carnivorous group known as theropods.
TEHRAN (FNA)- Birds originated from a group of small, meat-eating theropod dinosaurs called maniraptorans sometime around 150 million years ago.
The last few decades have seen increasing amounts of evidence from comparisons of bird and dinosaur skeletons to support this view--including the discovery of wishbones in a wide range of theropods, such as Tyrannosaurus rex.
Linhenykus lived alongside closely related and similarly sized theropod dinosaurs.
The feathered theropods of the Jehol Biota are among the best studied carnivorous dinosaurs in the world, but they all represent small-bodied theropods (most are smaller than an average-sized man).
Unlike other feathered dinosaurs, however, this species was not a theropod.
Research intensified, and the resulting findings began painting a picture of the Denali of old: theropods, bipedal meat-eaters that range from the size of a chicken to a towering Tyrannosaurus rex; hadrosaurs, duck-billed vegetarians from the ornithod group; and prehistoric wading birds that resembled modern-day members of the sandpiper family.
The creature belonged to a sub-group of the theropods, the dinosaur family thought to have given rise to modern birds
The size of the prints is comparable to those of footprints attributed to large theropods at other Glen Rose tracksites (Farlow 1987; 2001; Pittman 1 989).