Trimeroceratidae
Trimeroceratidae is a family of molluscs in the order Oncocerida. These molluscs were fast-moving nektobenthic carnivores. They lived in the Silurian period.
Distribution
Species have been found in Silurian-era strata of Canada, China, Czechia, Italy, Russia, Sweden, and the United States.Genus
ClathrocerasEotrimerocerasInversocerasJeppssonocerasPatagiumocerasPentamerocerasPlemerocerasSimonssocerasStenogomphoceras- ''Trimeroceras''