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Aequitriradites Delcourt & Sprumont and Couperisporites Pocock liverwort spores from the Early Cretaceous of Patagonia, Argentina. Spores belonging to liverworts are common components of Early Cretaceous assemblages in Southern Patagonia. Two genera, Aequitriradites and Couperisporites were identified from several localities and offshore wells in the Austral Basin. Three new species of Aequitriradites, viz. A. plicatus, A. longispinosus and A. superpinulosus are defined, together with the known species A. spinulosus, A. verrucosus and A. baculatus. Couperisporites is described and illustrated for the first time in Argentina with two species, viz. C. lilianae n.sp. and C. sp. Considerations on some morphological aspects related to ornamentation and exine structure are made as well as some stratigraphic implications on the distribution of these taxa. The taxonomic variety suggests favourable temperate/warm and humid environmental conditions for development of liverworts during the Early Cretaceous in Patagonia in agreement with data provided by other plant groups identified in the same assemblages.