Eocardia

{{short description|Extinct genus of mammals from Argentina}}

{{automatic taxobox

| fossil_range = Early-Middle Miocene (Santacrucian)
~{{Fossil range|17.5|16.3}}

| image = Eocardia.jpg

| image_caption = Skeletal restoration

| taxon = Eocardia

| authority = Ameghino 1887

}}

Eocardia is an extinct genus of rodent from the Early to Middle Miocene of Argentina (Santa Cruz Formation) and Chile, South America. The {{convert|30|cm|in}} long creature was related to guinea pigs and the capybara.{{cite book |editor=Palmer, D.|year=1999 |title= The Marshall Illustrated Encyclopedia of Dinosaurs and Prehistoric Animals|publisher= Marshall Editions|location=London|page= 285|isbn= 1-84028-152-9}}