Anomalocaris, a soft-bodied shrimp, was the killer whale of the Cambrian period and is considered the world's first apex predator.
Arthropleura, the largest arthropod of the Carboniferous period, thrived in 5-10% more oxygen from the vast rainforests, which contributed to the impressive size.
This ancient protomammal had sabre-like canine teeth that enabled it to deliver fatal attacks on large herbivores like Scutosaurus.
Scutosaurus had few animals that rivalled its massive size during the Late Permian period. This large and heavy reptile had to eat almost continuously to sustain its enormous size.
Tiktaalik was classified as a fish, yet its strong, robust fins with highly mobile joints could support its weight on land as well.
Read Now