On the type material of the Upper Ordovician mitrate “carpoid” Diamphidiocystis drepanon Kolata & Guensburg (Echinodermata: Stylophora)
Keywords:Homalozoa, Mitrata, Anomalocystitidae, Diamphidiocystis, type specimens, collections
We document the formal transfer of the holotype, seven paratypes, and two referred specimens of the mitrate “carpoid” Diamphidiocystis drepanon Kolata & Guensberg (Echinodermata: Stylophora) from the Department of Geology, Southern Illinois University (SIU) to the paleontological collection of the Illinois State Geological Survey (ISGS) at the PRI Center for Paleontology. A tabulated list of the specimens cross-referenced with their new ISGS numbers is provided. The specimens come from the Cincinnatian (Upper Ordovician) Orchard Creek Shale (Maquoketa Group) near Thebes in Alexander County, southern Illinois.
Copyright (c) 2023 Sam Heads; Dennis Kolata, Thomas Guensburg
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