Assertion: eurypterid | /r/CapableOf | evolve giant armour-plated fish
Facets:
value: in an ‘arms race’
type: TEMPORAL
value: alongside early vertebrates
type: OTHER
Source sentences:
text: Originally proposed in the 1930s, ‘Romer’s theory’ argues that eurypterids evolved in an ‘arms race’, alongside early vertebrates – giant armour-plated fish called placoderms – which is why they became so large.