This animal is the oldest Australian xiphosurid (an order of arthropods related to arachnids, more commonly known as horseshoe crabs).
Specimen number: utgd:123979
Significance of specimen: Tasmaniolimulus patersoni showing the prosoma and throacetron preserved as a mould
Geological age: Permian/Triassic
These data originally supplied by Russell Bicknell, read more: https://peerj.com/articles/13326/