. Bulletin of the British Museum (Natural History). 124 PITT AND TAYLOR. described and therefore the subordinal status of the genus is unclear. Brood chambers in S. marginata are, however, described below and imply that Semimulticavea, in spite of the presence of possible pseudolunaria (see Brood 1972: 71 for a definition of these structures), may be a cerioporine and not a rectangulate as previously considered ( Bassler 1953). Range. Aptian to ?Campanian. Semimulticavea marginata (Canu & Bassler, 1926) Figs 128-136 1909a Radiopora neocomiensis (d'Orbigny); Gregory: 284; text
. Bulletin of the British Museum (Natural History). 124 PITT AND TAYLOR. described and therefore the subordinal status of the genus is unclear. Brood chambers in S. marginata are, however, described below and imply that Semimulticavea, in spite of the presence of possible pseudolunaria (see Brood 1972: 71 for a definition of these structures), may be a cerioporine and not a rectangulate as previously considered ( Bassler 1953). Range. Aptian to ?Campanian. Semimulticavea marginata (Canu & Bassler, 1926) Figs 128-136 1909a Radiopora neocomiensis (d'Orbigny); Gregory: 284; text-figs 74-75. 1926 Radiopora tuberculata (d'Orbigny); Canu & Bassler: 63; pi. 20, figs 2-5. 1926 Multigalea canui (Gregory); Canu & Bassler: 61; pi. 19, figs 1-6 [non Reptomulticava canui Gregory 1909/>]. 1926 Multigalea marginata Canu & Bassler: 62; pi. 19, figs 7-10. HOLOTYPE. USNM 69911, figd Canu & Bassler, 1926: pi. 19, figs 7-10. Other material. BM(NH) 10178, 10189, 10300, Mantell Colin; D3143 (with 3 remnants and 3 thin sections), figd as Radiopora neocomiensis (d'Orbigny) by Gregory (1909fl); D4985, Brown Colin; D52203, D55365, D55367-8, Little Coxwell Pit, Pitt Colin; D55114, D55364, D55372, Bowler's Pit, Pitt Colin; D55113, Little Coxwell Pit, Davis Colin; D55117, D57722 (3 thin sections). Bowler's Pit, Gaster Colin; D55366, Little Coxwell Pit. Cleevely Colin; D55369, Little Coxwell Pit, Thomas Colin; D57723 (3 thin sections). Little Coxwell Pit, A. G. Davis Colin. Description. Zoarium massive and multilamellar (Figs 128- 129, 135). typically large (up to 70 mm across), usually irregularly hcmisperical, but occasionally shaped like a carrot and up to 95 mm high with an axial hole (due to growth around an unpreserved substrate). In some places the succes- sive layers are tightly packed, but elsewhere there may be significant amounts of void space between the layers (Fig. 132). Each layer consists of numerous low and broad, in- verted cup-shaped s
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