Microgloma H. L. Sanders & Allen 1973

Figures 14–18.Microgloma macaron sp. n. Internal view, right valve 14 left valve 15 detail of the hinge plate and ligament 16 External view, right valve 17 left valve 18 Holotype MNRJ 19112 (14,16,18). Paratype IBUFRJ 15297 15, 17 Scale bars: 14, 16= 200 µm; 15, 18 = 300 µm; 17 = 250 µm.

Figures 19–22.Microgloma macaron sp. n. Dorsal view 19 prodissoconch 20 (IBUFRJ 15297). Ventral margin view, extended margin 21 periostracum of the ventral margin 22 (IBUFRJ 19177). Scale bars: 19, 21 = 200 µm; 20, 22 = 100 µm.

Figures 23–28. Microgloma pusilla (Jeffreys, 1879) USNM 199712 23 Microgloma nhanduti sp. n. External view, leftt valve 24 IBUFRJ 15283, right valve 25 IBUFRJ 14991. Internal view holotype MNRJ 19.113, detail of the reslifer and umbo 26 right valve 27 left valve 28 Scale bars: 23 = 500 µm; 26 = 100 µm; 24–25, 27–28 = 200 µm.

Figures 29–31.Microgloma nhanduti sp. n. Dorsal view IBUFRJ 19131 29 prodissoconch surface 30 ventral margin IBUFRJ 19176 31 Scale bars: 29, 30 = 200 µm, 31 = 80 µm.