For the full episode where this dinosaur of the day was originally featured check out [ Ссылка ]
Check out our Crystal Palace Dinosaurs video featuring Hylaeosaurus at [ Ссылка ]
#Hylaeosaurus
Ankylosaur that lived in the Early Cretaceous in what is now England
Part of the three original dinosaurs that Richard Owen based Dinosauria on in 1842 (covered the other two, Iguanodon in episode 87 and Megalosaurus in episode 47)
One of the first dinosaurs discovered
Gideon Mantell discovered Hylaeosaurus in 1832
Only a few fossils have been found, so not much is known
Holotype includes the rear of the skull, vertebrae, and some spikes and armored plates
Other fossils may be referred to Hylaeosaurus from the Isle of Wight, France, Spain, Germany, and Romania, but many are considered dubious or could belong to Polacanthus
May have been a basal nodosaurid or a basal ankylosaurid
Often depicted as a typical nodosaur, with rows of plates on the back and tail and a long head, with a beak to crop vegetation
Shoulder spines curve back and are long, flattened, narrow, and pointed
Had at least three long spines on its shoulder, and had body armor
Estimated to be up to 20 ft or 6 m long (Gregory Paul estimated it to be about 16 ft or 5 m long and weigh 2 tonnes)
Darren Naish estimated it to be between 9.8 to 13.1 ft (3 to 4 m) long
Mantell had thought it was 25 ft (7.6 m) long, about half the size of Iguanodon and Megalosaurus, and he thought it was like a modern lizard
Type species is Hylaeosaurus armatus
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