Clam - Fossil carving Coprolites are quite rare because

Coprolites are quite rare because they tend to decay rapidly

Description: I used to always see this labelled as dendritic agate

Approximate size of 1 piece: 30mm x 16mm x 12mmApproximate weight of 1 piece: 6g

Er Rachidia Province

Approximate Weight of 1 piece: 45g

Clam - Fossil carving Coprolites are quite rare becauseOrigin: Madagascar Era: Jurassic Cretaceous Geographic Age: 150 mya Description: Bivalves have no head, and they also lack a radula. They include clams, oysters, cockles, mussels, scallops, and numerous others that live in saltwater, as well as some families that live in freshwater. The majority are filter feeders. The gills have evolved into ctenidia, specialized organs for feeding and breathing. Most bivalves bury themselves in sediment, where they