The Echinoid Directory

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

Echinotiara arabica Melville, 1955. NHM E79073. Marrat Formation, Toarcian, Lower Jurassic, Khusm Jufaya, near Riyadh, Saudi Arabia. Lateral view (ambulacral).

Diameter of test 22 mm.