Primitive Spiders are reliant on moist habitats, they are closest in evolution to aquatic creatures. They are nocturnal, sometimes very aggressive, and contain the deadliest spiders, the funnelwebs. They are long-lived and generally live below ground or in protective funnels of silk. Families include trapdoor and mouse spiders.
BARYCHELIDAE Trapdoors
This spider was named in 1994 by Dr Robert Raven of Queensland Museum (Mygalomorph spiders of the Barychelidae in Australia and the western Pacific. 
DIPLURIDAE trapdoors
Two Diplurid genera and species occur in Brisbane's west, Australothele jamiesoni which tends to like the moister zones, and Namirea planipes which has golden hairs on the head; both of which Robert Raven (Queensland Museum) named. Both eat snails but no bites have been recorded.
HEXATHELIDAE Funnelwebs
This funnel is one of those inspected by Robert Raven (Qld Museum) after a bite recorded in Newmarket.
Dr Raven said that the local Funnelwebs...
IDIOPIDAE Euoplos sp Golden Trapdoor Spider
Robert Raven (Senior Curator Arachnida Queensland Museum) writes: "These beautiful trapdoor spiders build a short burrow (up to 40cm long) in the...
IDIOPIDAE Trapdoor Spiders
Australia is very well represented by the trapdoor spider family Idiopidae, having more species and genera than any other country and up to 6 species occuring together at one location. The females build burrows up to 30-40cm deep in the ground, mostly on embankments. The burrow entrance is often...