Changaspis Trilobite From China

A detailed example of a member of the Order Corynexochida, Family Oryctocephalidae, this is the trilobite Changaspis placenta. Notice the pleural spines which possibly enabled it to stay at the seafloor surface, much like the function of snowshoes. When the trilobite was enrolled, these same spines would have presented a mouthful for any would-be predator.