''Pelagodiscus'' is a monospecific genus of discinid

brachiopod Brachiopods (), phylum Brachiopoda, are a phylum of trochozoan animals that have hard "valves" (shells) on the upper and lower surfaces, unlike the left and right arrangement in bivalve molluscs. Brachiopod valves are hinged at the rear end, w ...

s. Silica tablets leave a distinctive tesselating imprint on the inner surface of its shell.

References

Brachiopod genera Monotypic protostome genera Discinida {{brachiopod-stub