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These teeth are also proportionately large compared to those of other ankylosaurs, with the largest measuring 10 millimetres (0.39 inches) across. [4] This compares to the much larger North American Euoplocephalus, 6–7 m (20–23 ft) in body length, which had teeth averaging only 7.5 mm (0.30 in) across. [7]
Euoplocephalus (/ j uː ˌ ɒ p l oʊ ˈ s ɛ f əl ə s / yoo-OP-loh-SEF-ə-ləs) is a genus of large herbivorous ankylosaurid dinosaurs, living during the Late Cretaceous of Canada. It has only one named species, Euoplocephalus tutus. The first fossil of Euoplocephalus was found in 1897 in Alberta.
Size comparison. Edmontonia was bulky, broad and tank-like.Its length has been estimated at 6.6 m (22 ft). [1] In 2010, Gregory S. Paul considered both main Edmontonia species, E. longiceps and E. rugosidens, to be equally long at six metres and weigh three tonnes.
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.
As some analyses, like that of Carpenter from 2001 or David B. Norman in 2021 find Scelidosaurus and possibly other early forms like Emausaurus and Scutellosaurus to fall closer to Ankylosaurus than Stegosaurus, Carpenter and later Norman suggested redefining Ankylosauria to limit it to the two subclades Nodosauridae and Ankylosauridae ...
Euoplocephalus tutus: CMN 0210 [67] Canadian Museum of Nature: Campanian: Dinosaur Park Formation, Alberta: Partial skull and numerous osteoderms [67] 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 [67] [68]
Size comparison of GI SPS 100/151 and MPC-D 100/1305 Saichania was a medium-sized ankylosaur, measuring 5–7 metres (16–23 ft) in length and 1.4–2.0 metric tons (1.5–2.2 short tons) in body mass.
Tarchia was a medium-sized ankylosaur, measuring around 5.5–6 metres (18–20 ft) long and weighing up to 2.5–3 metric tons (2.8–3.3 short tons). [9] [10] If ZPAL MgD I/113 indeed belongs to the genus, it would have belonged to an individual measuring 5.8–6.7 metres (19–22 ft) long.