;"D. kawakamii";"D. sessile var. intermedium";"D. shimadae" "polar axis (µm)";29.12±0.97;26.90±0.20;27.41±1.32 "equatorial axis (µm)";43.31±2.02;37.45±3.30;39.77±2.21 P/E;0.67±0.02;0.78±0.08;0.69±0.03 shape;oblate;oblate;oblate size;medium;medium;medium aperture;1-sulcate;1-sulcate;1-sulcate sculpture;foveolate;areolate;rugulate