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Invertebrates
Arthropods
Basic design of arthropods includes bilateral symmetry, a segmented body, jointed appendages, and a stiff exoskeleton composed of chitin and proteins and sometimes further strengthened with calcium carbonate or calcium phosphate.
Groups include crustaceans (such as crabs and lobsters), chelicerates (such as spiders, scorpions, and eurypterids (extinct)), uniramians (insects) and trilobites (extinct).
Collections at this repository contain a wide variety of arthropods with interesting type specimens of crabs and lobsters from the work of Rathbun and Stenzel.
The large collection of trilobites catalogued into the BEG collection was transferred[pdf]* to the Smithsonian in 1973.
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