The Echinoid Directory

• Home
• Introduction
• Morphology
• Keys
• Classification
• 3D models
• Index to taxa
• Glossary
• Log in

Tiarechinus princeps Neumayr, 1881; St Cassian Formation, Carnian, Upper Triassic, Alpi di Specie, St Cassian, Italy. From Kier, P.M. 1977. Triassic echinoids. Smithsonian Contributions to Paleobiology 30, 1-88 (pl. 17, fig. 3). Lateral view.

Diameter of test 5.2 mm.