Search results
Results from the WOW.Com Content Network
The largest-known thyreophoran was Ankylosaurus at 9 m (30 ft) in length and 6 tonnes (6.6 short tons) in weight. [ 445 ] [ 446 ] Stegosaurus was also 9 m (30 ft) long [ 429 ] but around 5 tonnes (5.5 short tons) tonnes in weight.
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.
Since adult Ankylosaurus did little chewing of its food, it would have spent less time in the day foraging than an elephant. [12] Based on the broadness of the ribcage, the digestion of unchewed food may have been facilitated by hindgut fermentation like in modern herbivorous lizards, which have several chambers in their enlarged colon. [10]
The smallest non-avialan theropod known from adult specimens may be Anchiornis huxleyi, at 110 grams (3.9 ounces) in weight and 34 centimetres (13 in) in length, [36] although later study discovered larger specimen reaching 62 centimetres (24 in). [37] However, some studies suggest that Anchiornis was actually an avialan. [38]
Talarurus was a medium sized ankylosaur, Thomas Holtz and Gregory S. Paul estimated its length at 5–6 m (16–20 ft), Paul gave a weight of 2 t (2,000 kg), [9] however, Holtz estimated it around 454 to 907 kg (1,001 to 2,000 lb). [10]
Gargoyleosaurus was a relatively small ankylosaur, reaching 3–3.5 m (9.8–11.5 ft) in length and 300–754 kg (661–1,662 lb) in body mass. [3] [4] [5] Much of the skull and skeleton has been recovered, and the taxon displays cranial sculpturing, including pronounced deltoid quadratojugal and squamosal bosses.
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]
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 ...