Records of specimens ranging in age from the Precambrian to the recent (Holocene) with strong Paleozoic, Cretaceous and Paleogene/Neogene components. Taxonomic emphasis includes, echinoderms, brachiopods, molluscs, corals and sponges. Geographic spread is global with about 60% of the collection deriving from Texas. Substantial holdings come from Mexico, Europe and Australia.
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