NMITA: Neogene Marine Biota of Tropical America 

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Xestoleberis duo Bold, 1988

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SEM Photograph: (Bold, 1988, pl. 13, fig. 9) Scale is 0.1 mm. Specimen HVH 10720 (NMB Locality 16145: Río Gurabo, Gurabo Formation). Left valve, male. Height: 0.33 mm; width: 0.17 mm; length: 0.50 mm.

Morphologic Description: A species of ovate shape, with sexual dimorphism easily visible only in dorsal view.

Holotype: HVH 10720 (Locality: NMB 16145, Río Gurabo, Dominican Republic, Gurabo Formation).

Distribution:

• Upper Miocene and Pliocene: Cuba, Hispaniola.
• Recent: Trinidad-Paria shelf (73m) (Fithian, 1980).