KOLATA, DENNIS R. & MALCOLM JOLLIE
Anomalocystitid mitrates (Stylophora-Echinodermata) from the Champlainian (Middle Ordovician) Guttenberg Formation of the Upper Mississippi Valley region.
1982. Journal of Paleontology Vol. 56, No. 3; pp. 631-653, 10 fig. 2 plts. Orig. extract, stapled, very good. **
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