. Bulletins of American paleontology. TNS-5 NMS-5. 2 3 4 5 Text-figure 12.—Box plots showing medians, first and third quan- tiles, and ranges for measurements and counts made on species with bidirectional flabelloid colony forms: 1 = Thysanus navicula, 2 = Hadrophyllia saundersi. 3 = Manicina geisleri. 4 = M. grandis. and 5 = M. jungi. IVW, valley width: OVW, corallum width; TNS-5. total number of septa per 5 mm; NMS-5, number of major septa per 5 mm. mation of Florida (Thysanus floridanus Weisbord, 1974). Of these seven, the holotypes of T. corbicula and T. floridanus have values for total nu
. Bulletins of American paleontology. TNS-5 NMS-5. 2 3 4 5 Text-figure 12.—Box plots showing medians, first and third quan- tiles, and ranges for measurements and counts made on species with bidirectional flabelloid colony forms: 1 = Thysanus navicula, 2 = Hadrophyllia saundersi. 3 = Manicina geisleri. 4 = M. grandis. and 5 = M. jungi. IVW, valley width: OVW, corallum width; TNS-5. total number of septa per 5 mm; NMS-5, number of major septa per 5 mm. mation of Florida (Thysanus floridanus Weisbord, 1974). Of these seven, the holotypes of T. corbicula and T. floridanus have values for total number of septa per 5 mm (TNS-5) and corallum widths (OVW) sim- ilar to CCD 2198 (Tables 11, 12), and are therefore synonymized. The holotypes for T. excentricus. T. ele- gans, and T. hayesi have values for total number of septa per 5 mm (TNS-5) and corallum widths (OVW) similar to specimens CCD 2193 and 2194 (Tables 11, 12), and are synonymized. The holotype of T. vaugh- ani is an unusually tiny specimen; its high values for TNS-5, however, are more similar to CCD 2198; there- fore, it is questionably synonymized. Meandroid colony forms Four faviid genera with meandroid colony forms have been reported for the entire Cenozoic of the Ca- ribbean region: Colpophyllia Milne Edwards and Hai- me, 1848, Diploria Milne Edwards and Haime, 1848, Leptoria Milne Edwards and Haime, 1848, and Man- icina Ehrenberg, 1834. Of these four, only Leptoria has ever occurred in the Indo-Pacific, and its last oc- currence in the Caribbean is restricted to the Late Ol- igocene (Budd et 1992). Leptoria also differs from Colpophyllia, Diploria, Manicina, and many other fa- viids by having a lamellar (instead of spongy) colu- mella. Colpophyllia, Diploria, and Manicina differ from one another in valley width and in the structure of the columella and wall (Table 13; Text-fig. 14). The columella is a plate formed by elongation of a proto- septum into the corallite center ("lamellar"'), or a
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