Order Phacopida, Family Acastidae
is 72 mm long
Elegant example of a bizarrely-spined member of the Acastidae known
as Quadrops flexuosa. Once called Philonyx, the genus derives its
name from the unusual quadripartite rostrum quine to this taxon.
Note the incredible profusion of spines displayed here. These spines
were a good defense against the fish of their day, affording quite
a mouthful for any predator with the temerity to attack. All the
cephalic, genal and axial spines have been prepared freestanding
making for a most dramatic display piece.