Project 2116: J. C. Lamsdell, D. E. G. Briggs, H. P. Liu, B. J. Witzke, R. M. McKay. 2015. The oldest described eurypterid: a giant Middle Ordovician (Darriwilian) megalograptid from the Winneshiek Lagerstätte of Iowa. BMC Evolutionary Biology. 15 (169):1–31.
This project has 1 specimen.