Aetostreon

Aetostreon is an extinct genus or subgenus within the genus Exogyra of fossil marine oysters in the family Gryphaeidae.

Select species

 * †Aetostreon latissimum (Lamarck, 1801)
 * †Aetostreon pilmatuegrossum Rubilar & Lazo, 2009
 * †Aetostreon subsinuatum (Leymerie 1842)