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Ankylosaurus [nb 1] is a genus of armored dinosaur. Its fossils have been found in geological formations dating to the very end of the Cretaceous Period, about 68–66 million years ago, in western North America, making it among the last of the non-avian dinosaurs. It was named by Barnum Brown in 1908; it is monotypic, containing only A ...
According to Madzia et al., Thyreophora is defined as the largest clade containing Ankylosaurus magniventris and Stegosaurus stenops but not Iguanodon bernissartensis and Triceratops horridus. [2] They also defined the less inclusive Eurypoda as "the smallest clade containing Ankylosaurus magniventris and Stegosaurus stenops " to include the ...
Ankylosaurinae is formally defined in the PhyloCode as "the largest clade containing Ankylosaurus magniventris, but not Shamosaurus scutatus". [2] [3] [4] The tribe Ankylosaurini is defined in the PhyloCode as "the largest clade containing Ankylosaurus magniventris, but not Pinacosaurus grangeri and Saichania chulsanensis".
This definition was further refined by Paul Sereno in 2005 to specify Ankylosaurus magniventris and Stegosaurus stenops, the type species of both genera, a definition that was followed by Madzia and colleagues in 2021 when the group name and definition was formalized following the PhyloCode. [5]
Originally named Stereocephalus before it was discovered that that genus was already occupied, has also been referred to the nomen dubium Paleoscincus as well as to Ankylosaurus [68] [69] Skull of the holotype with an accompanying diagram: Europelta carbonensis: AR-1/10 [70] Museo Aragonés de Paleontología [70] Mid-Albian [70] Escucha ...
Ankylosauridae (/ ˌ æ ŋ k ɪ l oʊ ˈ s ɔː r ɪ d iː /) is a family of armored dinosaurs within Ankylosauria, and is the sister group to Nodosauridae.The oldest known ankylosaurids date to around 122 million years ago and went extinct 66 million years ago during the Cretaceous–Paleogene extinction event. [1]
†Ankylosaurus †Ankylosaurus magniventris; 68.5–66 Ma Hell Creek Formation, Montana, USA An ankylosaurine ankylosaurid. The largest-known ankylosaur, estimated at 9 m (30 ft) and up to 6 tonnes (13,000 lb). Ankylosaurus Antarctopelta Edmontonia longiceps Tarchia †Anodontosaurus †Anodontosaurus lambei; 72.8–67 Ma, Campanian to ...
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