Table 8 in Morphometric analysis of Eocene nummulitids in western and central Cuba: taxonomy, biostratigraphy and evolutionary trends

Table 8. Characters and attributes (means and standard deviations, SD, in mm) for Operculinoides floridensis (loosely coiled) and comparisons with Nummulites striatoreticulatus, Palaeonummulites trinitatensis, O. floridensis (tightly coiled) and Operculinoides soldadensis. Symbol key: ++, strong positive differences with <1% error probability; +, differences with <5% error probability; 0, no significant differences; ――, strong negative differences with <1% error probability. O.floridensis (loose coiled)MeanSDO.floridensis (tight coiled)O.soldadensisP.trinitatensisN.striatoreticulatusFirst chamber length655.5116.47++++++++Proloculus nominal diameter213.643.520++++――Deuteroloculus ratio1.3170.1965+0+++Initial marginal radius292.550.030++++0Marginal radius increase0.1360.0151+0++++Spiral chamber height increase3.21.350000Initial spiral chamber height93.033.380++++0Backbend angle0.6320.086600+++Initial chamber length434.4104.66+++++++Chamber length increase0.0420.0187000++Perimeter ratio1.4350.129900+++