Arandaspis – an early fish

(a-ran-dasp-iss)

Jawless fish model.
Image: Jon Augier
Source: Museum Victoria

Ordovician

HOW BIG IT WAS

Arandaspis relative size depiction as described below
Arandaspis was about 15 cm long.

Arandaspis was one of the first fishes, although it was very different to modern fishes. It did not have jaws or paired fins, and its body was protected by armour plates and scale-like ‘scutes’. Unlike its tough outer skeleton, the internal backbone of early vertebrates like Arandaspis was probably made of cartilage.

WHERE IT WAS FOUND

Arandaspis map

This fossil of Arandaspis was discovered in the Northern Territory.

RELATED OBJECTS

Other objects from the Ordovician

GraptolitesPhosphate mineralsNeoasaphusCrinoids