Quetzalcoatlus northropi

para lo cual utilizaban los potentes músculos de sus patas para inmovilizarlas antes de asestarlas la dentellada mortal

It had a small head compared to its body

Snout-tail length 280 mm

up to 30 centimeters long

Pliosaurus brachydeirus Neovenator Quetzalcoatlus northropiPliosaurus brachydeirus was a marine plesiosaur reptile of the Pliosauridae family that lived during the Late Jurassic , primarily in the KimmeridgianTithonian age (approximately 155150 million years ago) . Its remains come mainly from marine deposits in southern England , within the context of the ancient European epicontinental sea , and the species holds an important historical role as one of the first pliosaurs formally described in paleontology.