Leaf1
Leaf2
Pycnogonida (sea spiders)
Xiphosura (horseshoe crabs)
†Eurypterida (sea scorpions)
(ticks, harvestmen, etc)
Araneae (spiders)
Pedipalpi (whip scorpions, etc)
Chaeriloidea
Pseudochactoidea
Buthoidea
"Iuroidea" (part)
Bothriuroidea
"Chactoidea" (part)
Scorpionoidea