. Bulletin of the British Museum (Natural History), Geology. . Fig. 3 Semailia smithi Morris & Skelton sp. nov. Four sections through the holotype approximately 10 mm either side of the commissure, BM LL41931; a, b, right valve, MC - accessory cavity for posterior myophore of left valve, PO - posterior tooth socket, AC - accessory cavity dorsal to tooth socket, CI - central tooth, AO - anterior tooth socket; c, d, left valve, with fine outer and large irregularly polygonal inner canals; x 1. PLATE 3 Fig. 1 Semailia sp., Jebel bu Milh,section 2, base of Simsima Formation; la, ventral view o
. Bulletin of the British Museum (Natural History), Geology. . Fig. 3 Semailia smithi Morris & Skelton sp. nov. Four sections through the holotype approximately 10 mm either side of the commissure, BM LL41931; a, b, right valve, MC - accessory cavity for posterior myophore of left valve, PO - posterior tooth socket, AC - accessory cavity dorsal to tooth socket, CI - central tooth, AO - anterior tooth socket; c, d, left valve, with fine outer and large irregularly polygonal inner canals; x 1. PLATE 3 Fig. 1 Semailia sp., Jebel bu Milh,section 2, base of Simsima Formation; la, ventral view of broken right valve, lb, dorsal view of right valve; BM LL41932 x 0-75. Fig. 2 Torreites sanchezi milovanovici Grubic; Haushi-Huqf Massif, Eastern Oman, BM LL41975, Samir Hanna Collection; 2a, view looking down onto commissural plane with broken left valve partly preserved in situ, x 1; 2b, dorsal view showing intucking of pillar L, 2c, posterior view showing infolds of pillars, 2d, ventral view; 2b-d, x 0-5. Fig. 3 Vaccinites aff. oppeli (Douville), Jebel bu Milh, section 2, Simsima Formation, bed 10, BM LL41730, marginal surface of outer shell layer of right valve, x 1. Semailia smithi Morris & Skelton sp. nov. PI. 2, fig. 1, Fig. 3 Material. A single specimen, the holotype, BM LL41931, from Jebel Huwayyah, section 2, Loftusia-Beds. Diagnosis. Typical of the genus but with three strong cari- nae or flaring radial costae on each valve. Description. Both valves are preserved, closed, although the body-cavity is matrix-filled and includes larger foramin- ifera. The specimen has two serpulids attached, one to each valve and aligned radially with respect to the umbones, with their apertures close to the valve commissure, amid the plicae of the ventral margins. The shell is curvingly biconical, with the two valves sepa- rately following almost a semicircular direction of growth, in. Please note that these images are extracted from scanned page images that may have been digital
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