Table 7 in Morphometric analysis of Eocene nummulitids in western and central Cuba: taxonomy, biostratigraphy and evolutionary trends

Table 7. Characters and attributes (means and standard deviations, SD, in mm) for Operculinoides floridensis (tightly coiled) and comparisons with Nummulites striatoreticulatus, Palaeonummulites trinitatensis, O. floridensis (loosely coiled) and Operculinoides soldadensis. Symbol key: ++, strong positive differences with <1% error probability; 0, no significant differences; -, negative differences with <5% error probability; ――, strong negative differences with <1% error probability. O. floridensis (tightly coiled)MeanSDO. floridensis (loosely coiled)O. soldadensisP. trinitatensisN. striatoreticulatusFirst chamber length431.292.32――++++0Proloculus nominal diameter192.844.160++++――Deuteroloculus ratio1.0800.0797-000Initial marginal radius255.351.510++++――Marginal radius increase0.1130.0132-――0++Spiral chamber height increase3.70.680++++0Initial spiral chamber height77.123.950++++-Backbend angle0.5630.10550――0++Initial chamber length287.278.67-++++0Chamber length increase0.0330.01170――0++Perimeter ratio1.3020.07580――0++