(a)
(b)
Figure 11.30 (a) Kilbuchophyllum – an Ordovician scleractiniomorph coral (approximately ×10).
(b) Reconstruction of Archisaccophyllia together with lingulid brachiopods, priapulid worms and
tall cylindrical sponges. (a, courtesy of Colin Scrutton; b, courtesy of Hou Xian-guang.)