The Echinoid Directory
Thielicidaris theili Vadet, 2000; drawing of holotype. St Cassian Beds, Carnian, Upper Triassic, Milieres St Cassian, Italy. Adoral fragment of interambulacral zone. From Vadet, A. 2001. Revision des echinides de Saint Cassian et evolution des echinides post-carboniferes. Memoires de la Societe Academique du Boulonnais 20, 1-116.
Width of fragment 2.6 mm.