As part of the 2018 Art Athina art fair, Baltoyanni organized for the Features section the exhibition Pseudomorphs. Focusing on formal and conceptual metamorphosis, the presentation took its name from the geologic pseudomorph, a crystal formed by a mineral that has chemically changed into another substance while retaining the external appearance of the original. Pseudomorphs brought together artists exploring layered and ambiguous subject matter relevant to the Greek context, such as identity politics and issues of displacement. Participating galleries included Balice Hertling (Paris), Bonny Poon (Paris), Bureau (New York), Callicoon Fine Arts (New York), High Art (Paris), Koppe Astner (Glasgow), Rodeo (London), and Union Pacific (London).