Achillobator

Achillobator is a genus of dromaeosaur from Asia during the late-cretaceous period, around eighty-six-million-years ago.

Facts
It was among the largest dromaeosaurs; the holotype and only known individual of Achillobator is estimated at 5 to 6 m (16.4 to 19.7 ft) long.

In the film
A pair of Achillobator were briefly seen being chased by Heart, who accused them of eating Umasou.