Table 5 in Morphometric analysis of Eocene nummulitids in western and central Cuba: taxonomy, biostratigraphy and evolutionary trends

Table 5. Characters and attributes (means and standard deviations, SD, in mm) for Palaeonummulites trinitatensis and comparisons with Nummulites striatoreticulatus, 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.
P. trinitatensisMeanSDO. floridensis (tightly coiled)O. floridensis (loosely coiled)O. soldadensisN. striatoreticulatusFirst chamber length218.253.81――――0――Proloculus nominal diameter99.028.91――――0――Deuteroloculus ratio0.9500.13760――-0Initial marginal radius126.832.48――――0――Marginal radius increase0.0990.01720――――++Spiral chamber height increase1.70.30――00――Initial spiral chamber height35.517.71――――0――Backbend angle0.4450.11650-――++Initial chamber length151.926.76――――0――Chamber length increase0.0250.014900――0Perimeter ratio1.2630.08590-――+