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Does anyone know of deposits other than the LeGrand crinoids where each species is preserved in a different characteristic color, all on the same slab? We have this kind of thing in the brachiopods and trilobites of the Decorah Formation (Late Ordovician) here in Missouri, which is what got me thinking about it. But I've never seen a report summarizing other cases of this phenomenon, and as I think about it I'm not sure I can name any others. Can you? Brachiopod photo info: A= Zygospira B= Rafinesquina C= Doleroides 1 = Isotelus, rusty brown 2 = ?Achatella, light gray. Highway M near Antonia, Jefferson County Decorah Formation, Late Ordovician, ~450 million years old