Table 3 in Morphometric analysis of Eocene nummulitids in western and central Cuba: taxonomy, biostratigraphy and evolutionary trends

Table 3. Characters and attributes (means and standard deviations, SD, in mm) for Nummulites striatoreticulatus and comparisons with Palaeonummulites trinitatensis, Operculinoides floridensis (tightly coiled), O. floridensis (loosely coiled) and O. soldadensis. Symbol key: ++, strong positive differences with <1% error probability; +, differences with <5% error probability; 0, no significant differences; -, negative differences with <5% error probability; ――, strong negative differences with <1% error probability. N. striatoreticulatusMeanSDO. floridensis (tightly coiled)O. floridensis (loosely coiled)O. soldadensisP. trinitatensisFirst chamber length454.7221.330――++++Proloculus nominal diameter335.0151.10++++++++Deuteroloculus ratio1.0030.13180-――0Initial marginal radius360.2144.63++0++++Marginal radius increase0.0620.0080――――――――Spiral chamber height increase3.81.4500++++Initial spiral chamber height112.959.18+0++++Backbend angle0.1670.0527――――――――Initial chamber length253.2131.050――++++Chamber length increase0.0090.0064――――――0Perimeter ratio1.1020.0591――――――――