Submitted by: ummp invertebrate paleontology
            
            Taxon:  Aulocystis jacksoni
            
            Submit date: 2008-12-03
            
            Location (approximate): Detroit, Wayne, MI
            
            Stratigraphy: Silica Formation
            
            Age: Erian (Middle Devonian)
            
            Submitter notes: This specimen is a hypotype.  It is 3.8 cm tall.  From Detroit Water Works.