Whalen & Briggs - Revised Supplementary Data File

Ecomorphological assignments for each genus with references, justifications, relative confidence scores, and additional informatio

Character list for phylogenetic analysis - PDF format

Character list for phylogenetic analysis associated with Proceedings B publicatio

Cascolus ravitis holotype (VAXML/STL format)

Virtual specimen of OUMNH C.29698, holotype of Cascolus ravitis. Reconstructed from physical-optical tomographic dataset using SPIERS (http://www.spiers-software.org). For method see Sutton, Rahman and Garwood 2014. Techniques for Virtual Palaeontology. Wiley Blackwell, 208pp. For details of VAXML/STL format see http://palaeo-electronica.org/content/issue-2-2012-technical-articles/226-virtual-palaeontology-toolkit

NEXUS file for analysis of Cascolus

NEXUS format data file associated with Proceedings B articl

Additional file 1: of The oldest described eurypterid: a giant Middle Ordovician (Darriwilian) megalograptid from the Winneshiek Lagerstätte of Iowa

Data matrix for the phylogenetic analysis. (NEX 35 kb