Identifier: onstructureaffin1881nich (find matches)
Title: On the structure and affinities of the genus Monticulipora and its sub-genera, with critical descriptions of illustrative species
Year: 1881 (1880s)
Authors: Nicholson, Henry Alleyne, 1844-1899
Subjects: Corals, Fossil Monticulipora
Publisher: Edinburgh, London, W. Blackwood and Sons
Contributing Library: Harvard University, Museum of Comparative Zoology, Ernst Mayr Library
Digitizing Sponsor: Harvard University, Museum of Comparative Zoology, Ernst Mayr Library

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of the same, enlarged eighteen times.Fig. 3 c Tangential section of the same, enlarged eighteen times.Fig. 3 d. Part of the preceding section, enlarged fifty times.Y\g. 3 e. Vertical section of the same, embracing the whole thickness of the corallum, enlarged eight times.Fig. 3/ Part of the outer margin of the preceding section, enlarged eighteen times.Fig. 4. A thin variety of Monticulipora (Peronopora) fronJosa, DOrlx, from the Cincinnati group of Ohio, of the natural size.Fig. 4 a. Tangential section of the same, enlarged fifty times, showing the imperfect tabular of the larger corallites, the intercalated small corallites, and the moderate development of spiniform corallites.Fig. 5. A fragment of Monticulipora (Peronopora) frondosa, DOrb., from the Cincinnati group of Ohio, of the natural size, showing the faintly marked monticules.Fig. 5 a. Broken edge of the same specimen, of the natural size, showing the general arrangement of tlie corallites. H Alleyne Nicholson, del. Plate V.
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C.BerTeau, litL, Watepstou fc Sons.LHlf ^Eimf PLATE VI. Fig. I. ()utline of a specimen oi Monticitlipiva (Hctcrotrypa) i)ia)iuiiulafa, DOrb., from the Cincimiati group of Ohio, of the natural size.Fig. I a. Portion of the surface of a specimen of the same, showing very faintl) marked monticules, of the natural size.Fig. I b. Portion of the surface of another specimen of the same, showing more conspicuous tubercles, of the natural size.Fig. I I. Surface of the same, enlarged eighteen times.Fig. I d. Tangential section of the same, taken just below the surface, showing the larger and smaller tubes, and the occasional hollow spines, (spiniform corallites).Fig. 1 c. Part of the same section, enlarged fifty times.Fig. \ f. Another tangential section, taken at a deeper le\el than the preceding, enlarged twenty times.Fig. I g. Portion of a vertical section of the same at right angles to its flat sur faces, enlarged eighteen times, showing the different tabulation of the larger and smaller tu

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