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.

Specimen reference source
Unvouchered

Taxonomic name
Pentecopterus decorahensis

Specimen created by
James Lamsdell

Specimen created on
August 27 2015 at 10:45:16

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