Skeletal Grain types

Images

Bivalves

Gastropods

Cephalopods

Brachiopods

Ostracods

Green Algae

Red Algae

Benthic Foraminifera

Planktonic Foraminifera

Other Pelagic Biota

Corals

Sponges

Calci-microbes and microbial fabrics

Echinoderms

Bryozoans

Worms

Trilobites

Incertae sedis