A contention that scorpions were the first land animals:
Fossil experts in the US have revealed the remains of what they say is the first animal that may have set foot on land – an ancient scorpion.
The earliest animals were aquatic, but eventually transitioned on to land. While scorpions are known to be one of the first animals to have become fully land-dwelling, experts say the two new fossils add to a growing debate about when animals made the shift.
The scorpion, which is about 2.5cm in length, is thought to have lived about 437m years ago, with the fossils discovered in a quarry north of state highway 164 in Wisconsin in the 1980s.
The earliest arachnid yet discovered, the creature has been named Parioscorpio venator, meaning ancestral scorpion and hunter. The creature, like modern scorpions, had two large claws and a tail with a sting at its end.
The sting. That means it’s a predator. Predators require prey – and something more alive than some algae or grass that can’t be stung to death or immobility so as to be eaten.