A block with some 40 specimens in various growth stages. They are mainly dorsal exoskeletons with a range in size from less than 1 mm up to 8 mm. The cranium and thorax of an Elrathia kingii (Meek, 1870) dorsal exoskeleton 23 mm by 18 mm is also present and two complete Peronopsis interstricta (White, 1874) are also present, the largest of which is 6 mm by 3 mm. USA.
Size: block 160 mm by 120 mm.
Size: block 160 mm by 120 mm.