Middle Jurassic to Early Cretaceous dinoflagellate species are retrieved from the Dinosaur members of the Tendaguru Formation, southern coastal Tanzania. The Lower Dinosaur Member yielded typical Bajocian-Callovian dinoflagellate cysts including Dissilodinium caddaense, Durotrigia filapicatum, and Nannoceratopsis gracilis. The Nerinella Member (Oxfordian) yielded a good; relatively high diverse dinoflagellate cysts assemblage consistently dominated by Rigaudella aemula and Chytroeisphaeridia chystroeides. The Oxfordian age which is assigned to the Nerinella Member is supported by Fistulacysta simplex, Egmontodinium elongatum, Komewuia sp. A, and data concerning associated ammonites and ostracodes.

The Middle Dinosaur Member yielded a miospore rich assemblage with a few statigraphically important dinoflagellate cysts of early Kimmeridgian age, such as, Dingodinium tuberosum; this species is associated with Barbatacysta creberbarbata.

The Indotrigonia africana Member yielded rich and diverse Late Jurassic dinoflagellate suite consist of Dingodinium swanense, Wanaea tendaguruensis, Scriniodinium luridum, and Limbodinium patulum; these species, inter alia, Dingodinium swanense, suggest the Kimmeridgian age for this member; such age is supported by data relating to associated ammonites.

Although the palynoflora assemblage documented from the Upper Dinosaur Member is poor; a few stratigraphically important dinoflagellate cyst species of the Tithonian-Early Cretaceous age, such as Circulodinium compta are documented from this member. This Tithonian-Early Cretaceous age is in part consistent to data pertaining to ammonites.