Callopegma depressa SOLD

System: Cretaceous.
Floor: Campanian.
Origin: Hannover, state of Lower Saxony, Germany.
Measurements: 6.6 cm x 6.2 cm
SKU: PO131 Categories: , ,

Callopegma belongs to the demosponges, which are a class of the phylum Porifera. Its skeleton is composed of silica spicules and fibers of the protein spongin; some orders of demosponges have lost their spicules.