Archaeosyodon

{{Short description|Extinct genus of therapsids}}

{{Speciesbox

| fossil_range = Middle Permian

| image = Archaeosyodon praeventor.jpg

| image_caption = Restoration of Archaeosyodon praeventor

| genus = Archaeosyodon

| parent_authority = Tchudinov, 1960

| species = praeventor

| authority = Tchudinov, 1960

}}

Archaeosyodon is an extinct genus of dinocephalian therapsids. It was medium-sized, reaching about 1.5–2 m (4–5 ft) in length.{{Cite web|url=http://palaeos.com/vertebrates/therapsida/anteosauria.html|title = Palaeos Vertebrates Therapsida: Anteosauria}}