The order Protococcidiida is one of the most poorly studied basal groups Sporozoa (Apicomplexa sensu stricto). To date, phylogenetic unity protococcidians and their relationship with other sporozoans are understudied. Only protococcidian Eleutheroschizon duboscqi has molecular evidence a sister position to “true” coccidians (Eimeria, Sarcocystis, Toxoplasma). E. characterized by epicellular dev...