Diplomystus is an extinct genus of freshwater clupeomorph fish distantly related to modern-day extant herrings, alewives, and sardines. A small schooling fish, Knightia made an abundant food source for larger Eocene predators. Priscacara is an extinct genus of perch from the middle Eocene, characterized by a sunfish-like body and stout dorsal and anal spines. Mass deaths of Priscacara suggest it formed schools. Quarried from Mosaic Lake and unearthed by hand, this breathtaking mural contains a 16″ Diplomystus dentatus, 3 Knightia eocaena and a Priscacara liops.