. The Annals and magazine of natural history; zoology, botany, and geology. Natural history; Zoology; Botany; Geology. chief Generic Types of Paheozoic Corals. 71 and intermediate areas of the corallnm is essentially and fundamentally identical. They differ, howeverj in the struc- ture of the great mass of endothecal tissue which occupies the centre of the visceral chamber ; and these differences are shown in the annexed sketches, where the structure of the central area of these forms is H ^^a»m^' Diagrams showing the structure of ClisiophrjUum and its allies. A. Dibu- nophyllum
. The Annals and magazine of natural history; zoology, botany, and geology. Natural history; Zoology; Botany; Geology. chief Generic Types of Paheozoic Corals. 71 and intermediate areas of the corallnm is essentially and fundamentally identical. They differ, howeverj in the struc- ture of the great mass of endothecal tissue which occupies the centre of the visceral chamber ; and these differences are shown in the annexed sketches, where the structure of the central area of these forms is H ^^a»m^' Diagrams showing the structure of ClisiophrjUum and its allies. A. Dibu- nophyllum ; 13, Aspidophyllum; C, Rhodophyllum : D, type interme- diate between Aspidophyllum and Rhodophyllum ; E, Clisiophyllum; F, Cyclophyllum ; 6, transition-form between Koninckophyllum and the typical Clisiophylloids ; H, Carcinophyllimi (gen. nov.); I, tran- sition-form, near G. Fig. E rep7esfeii"tS Across ^yflllUll biHJlmophyllum coniseptum, Keys., of the natural size, in which the external and in- termediate areas are introduced as well as the central. Figs. A, B, C, D, and F are enlai'ged, and represent only the central area of the coraUum ; to complete these figures, an external and intermediate zone must be added, as in fig. Figs. G, H, and I are likewise en- larged, and represent the central area of the corallum, along with the inner ends of the septa. The letter / indicates the position of the Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original London, Taylor and Francis, Ltd
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