 Trigoniids are commonly found in both limestone, mudstone and sandstone in Jurassic and Cretaceous rocks all over the world.In Britain, examples are numerous in the Upper Jurassic rocks of the Dorset coast, particularly around the village of Osmington Mills.Other Jurassic rocks that yield specimens include the Cornbrash in Yorkshire and the Middle Jurassic sequence in the Cotswolds, particularly around Cleeve Hill, near Cheltenham.