How It Works-Book Of Dinosaurs

MOST AMAZING DINOSAURS

Compared to T-rex,

Herrerasaurus is tiny.

It lived in a time when

all dinos were fairly

small, meaning it was

a top predator

Fact

Dino skill

One of the fi rst dinosaurs, Herrerasaurus

had an semi-opposable thumb among its

claws, allowing it to grab more fi rmly onto

its prey

Killer rating: 4/5

Speed: 4/5

Defence: 2/5

Herrerasaurus

Herrerasaurus

(‘Herrera’s lizard’)

Carnivore

Late Triassic, 231 MYA

Found in: Argentina

Lived in: River fl oodplains with active volcanoes

Big feet

Herrerasaurus had big feet,

which, along with its strong

legs and powerful thigh

muscles, meant it could gallop

quite fast, up to 40km/h

Grasping jaws

Its lower jaw was jointed,

allowing it to slide back and

forth to grasp and bite prey

Long reach

Longer arms than

T-rex or Allosaurus

Sawing bite

It could slide its lower jaw

forward and backward in a

sawing bite

Deadly grip

Inwardly curving teeth allowed it

to hang onto its prey