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The Zarith or Tyrannosaurus, is a species of animal that lived on the surface world and the inner world of Pellucidar. they are one of the animals that lived in the Cretaceous and they lived Pellucidar. A young Zarith is roughly the size of a Shetland pony but presents a serious threat to animals at least as large as humans. These young animals are capable of delivering powerful blows with their fore paws which can knock a man senseless.

An adult Zarith is much bigger and hunts suitably large game such as the Tandor (the Pellucidar name for Woolly Mammoth) and the Thag (the Pellucidar name for Aurochs).[1]


  1. Back to the Stone Age, Chapter 9: The Charnel Caves