Full reference: F. Ameghino. 1891. Nuevos restos de mamíferos fósiles descubiertos por Carlos Ameghino en el Eoceno inferior de la Patagonia austral. – Especies nuevas, adiciones y correcciones [New remains of fossil mammals discovered by Carlos Ameghino in the lower Eocene of southern Patagonia. – New species, additions, and corrections]. Revista Argentina de Historia Natural 1:289-328
Parent taxon: Eocardia according to F. Ameghino 1891
See also Ameghino 1894
Sister taxa: Eocardia (Dicardia), Eocardia (Procardia), Eocardia montana, Eocardia petersoni, Eocardia robertoi, Eocardia robusta
Subtaxa: Eocardia (Tricardia) crassidens Eocardia (Tricardia) gracilis
Type: Eocardia (Tricardia) gracilis
Ecology: ground dwelling herbivore
Distribution: there are no occurrences of Eocardia (Tricardia) in the database