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Stegosaurus (/ ˌ s t ɛ ɡ ə ˈ s ɔːr ə s /; [2] lit. ' roof-lizard ') is a genus of herbivorous, four-legged, armored dinosaur from the Late Jurassic, characterized by the distinctive kite-shaped upright plates along their backs and spikes on their tails.
Stegosaurians were armored dinosaurs (thyreophorans). Originally, they did not differ much from more primitive members of that group, being small, low-slung, running animals protected by armored scutes. An early evolutionary innovation was the development of spikes as defensive weapons.
Thyreophora ("shield bearers", often known simply as "armored dinosaurs") is a group of armored ornithischian dinosaurs that lived from the Early Jurassic until the end of the Cretaceous. Thyreophorans are characterized by the presence of body armor lined up in longitudinal rows along the body.
There has been debate about whether the thagomizer was used simply for display, as posited by Gilmore in 1914, [13] or used as a defensive weapon. Robert Bakker noted that it is likely that the stegosaur tail was much more flexible than those of other ornithischian dinosaurs because it lacked ossified tendons, thus lending credence to the idea of the thagomizer being a weapon.
List of African animals extinct in the Holocene. List of Madagascar and Indian Ocean Island animals extinct in the Holocene; List of Macaronesian animals extinct in the Holocene; List of Saint Helena, Ascension and Tristan da Cunha animals extinct in the Holocene; List of Asian animals extinct in the Holocene; List of European species extinct ...
Meiolania was a well-armored animal with a somewhat raised carapace with spiky edges, osteoderm-covered front limbs, a head adorned by massive cow-like horns and a tail encased by spiked tail rings and tipped by a large bony club.
The camouflaged animal blends in with the murky river water and surrounding rocks, researchers said. ‘Armored’ creature found lurking in underwater caves of Brazil. It’s a new species
Glyptodonts are an extinct clade of large, heavily armoured armadillos, reaching up to 1.5 metres (4.9 ft) in height, and maximum body masses of around 2 tonnes.They had short, deep skulls, a fused vertebral column, and a large bony carapace made up of hundreds of individual scutes.