Discoserra ("serrated disc") is an extinct genus of ray-finned fish from the Mississippian of the Bear Gulch Limestone in Montana. It is a member of the Guildayichthyiformes with a round body and a skull possessing primitive and modern traits.Richard Lund, Eileen Grogan, Geodiversitas, 2006 Discoserra is about 60 mm long.Fossil Museum In 2006, Discoserra was hypothesized to be a stem neopterygian,Kathryn E. Mickle, Unraveling the systematics of palaeoniscoid fish although it has alternatively been placed in Cladistia along with other Guildayichthyiformes.
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