Plate 24.

A and B Caryophyllia ralphae (MNHN-Scl.2009-0077, A lateral view and B pedicel section): Green and red arrows indicating costae and monocyclic base respectively C and D Rhizosmilia robusta (USNM uncatalogued, Norfolk 2 stn. DW2114 C pedicel section and D lateral view): Red and green arrows indicating polycyclic base and costae respectively E Astroides calycularis (USNM 78767, colony view): Blue arrows indicating coenosteum F Dendrophyllia ijimai (USNM uncatalogued, Bathus 4 stn. DW933, lateral colony view): Yellow arrow indicating the axial polyp G Sphenotrochus hancocki (MNHN uncatalogued, Ebisco stn. DW2617, oblique view): Green arrows indicating costae H Trochocyathus hastatus (MNHN uncatalogued, Ebisco stn. DW2497, oblique view): White arrow indicating costal spines I Truncatoflabellum vigintifarium (MNHN uncatalogued, Ebisco stn. DW2578, oblique view): White arrow indicating lateral edge spines J Idiotrochus emarciatus (MNHN uncatalogued, Ebisco stn. DW2632, lateral view): White arrow indicating lateral edge spines (fish tail) K Tropidocyathus lessoni (MNHN uncatalogued, Musorstom 8 stn. DW1105, lateral view): White arrow indicating alate edge crests L Caryophyllia unicristata (MNHN-Scl.2009-0094, oblique view): White arrow indicating very sinuous lateral crest M Stephanocyathus weberianus (MNHN uncatalogued, Musorstom 5 stn. DW313, lateral view): White and green arrows indicating tubercles and costae respectively; Scale bars: blue = 1 mm; white = 5 mm.