English Trigonotarbida Cited by user Stemonitis on 12 Nov 2010 The Order Trigonotarbida is an extinct group of arachnids whose fossil record extends from the late Silurian to the early Permian .
English Ricinulei Cited by user Stemonitis on 11 Nov 2010 The Order Ricinulei is a group of arachnids known as hooded tickspiders. In older works they are sometimes referred to as Podogona.