Fig. 2

All figures are of columnal latera unless otherwise indicated. Scale bar 100 μm. a En echelon perforate stereom with elliptical lumina. Endoxocrinus parrae (Gervais). Recent. BELUM K2010.1.2. b En echelon perforate stereom with elliptical lumina. Endoxocrinus prionodes H.L. Clark. Recent BELUM K2010.2.2. c ?Labyrinthic stereom. Chariocrinus wuerttembergicus (Oppel). Jurassic, Toarcian, Whitby Mudstone Formation, Cleeve Hill, Gloucestershire, England. BM E70412. d Labyrinthic stereom. Democrinus cf. brevis. Recent. BELUM K2010.3.2. e En echelon perforate stereom with very small, widely spaced elliptical lumina. Laevigatocrinus laevigatus (Münster). Triassic, Carnian, Cassian Formation, Cion del Coute, Italy. Muschelkalkmuseum Ingelfingen. f En echelon perforate stereom with weakly elliptical lumina. ‘Balanocrinus’ subcrenatus (Münster). Triassic, Carnian, Cassian Formation, St Cassian, Italy. BMNH E67484 g. Labyrinthic stereom. Plicatocrinus inornatus Simms. Jurassic, Toarcian, Beacon Limestone Formation, Watton Cliff, Dorset, England. BM E70612. h Labyrinthic stereom. Millericrinus ? alpinus (Gümbel). Jurassic, Toarcian, Marlstone Rock Formation, Thorncombe Beacon, Dorset, England. BM E70515