. Bulletins of American paleontology. u / 8 9 Polygonality n=49 ,2. 1 2 3 Avg. Corallite Dimension (mm) <p 10 cr 0 n=4 0 =321 20 10 0 t) D 7 8 9 Polygonality H n=bU Polygonality Polygonality n=49 ,' Text-tigure 24. —Frequency distributions of average corallite dimension (all corallites and ttiose with six and more sides) and polygonality for selected coralla oi Paleufamsites suhclongus. A, B, USNM 485822. Section-interval 31-1 (Thebes North). C, D, USNM 485835, Section- interval 15-1 (Calumet). E-H, USNM 459082, Section-interval 14-1 (Higginbotham Farm); E and F
. Bulletins of American paleontology. u / 8 9 Polygonality n=49 ,2. 1 2 3 Avg. Corallite Dimension (mm) <p 10 cr 0 n=4 0 =321 20 10 0 t) D 7 8 9 Polygonality H n=bU Polygonality Polygonality n=49 ,' Text-tigure 24. —Frequency distributions of average corallite dimension (all corallites and ttiose with six and more sides) and polygonality for selected coralla oi Paleufamsites suhclongus. A, B, USNM 485822. Section-interval 31-1 (Thebes North). C, D, USNM 485835, Section- interval 15-1 (Calumet). E-H, USNM 459082, Section-interval 14-1 (Higginbotham Farm); E and F near corallum base, G and H higher in corallum. I, J, USNM 485855, Section-interval 14-1 (Higginbotham Farm). K, L, USNM 485900, Section-interval 32-lz (Thomson East). Each pair of graphs represents the same single transverse section; n = number of corallites (all), = coefficient of variation for all corallites. Although coralHte size frequency distinbutions are variable, there is a strong linear relationship between the average dimension of all corallites and the average dimension of corallites with six and more sides in transverse sections of this species (Text-fig. 25A). This relationship remains roughly constant with changes in corallite size. Also, the variability of corallite size with- in coralla does not change with changes in mean size, and there is no clear correlation within coralla between variability in size of all corallites and of those having six and more sides. There are some differences in the range of corallite size between stratigraphic intervals for which large col- lections are available (Text-fig. 25A), and this variation is correlated with colony growth form. Coralla having domical forms with flat bases tend to have the largest corallites, whereas those having bulbous or columnar forms with expanding bases tend to have smaller cor- allites (see Astogeny and corallite increase, above). Cor- alla with the largest average corallite dimensions occur
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