Whalen, N. & Selden, P. (2021). A new, giant ricinuleid (Arachnida, Ricinulei), from the Pennsylvanian of Illinois, and the identification of a new, ontogenetically stable, diagnostic character. Journal of Paleontology 95(3): 601-612. doi: https://doi.org/10.1017/jpa.2020.104
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