036rev
Final sort of all 400 brachiopods from this field trip. Cerro Gordo brachiopods have been collected and studied since 1858. I am relying on Jed Day (U of Illinois) for current generic names (36 articulate brachiopod species in the entire Cerro Gordo Member - how many at Rockford? - so far I've found 20 of his plus 10 possible others not listed); and for images and descriptions (and locales) have so far retrieved a dozen recent papers plus the old books of the Fentons(1924, 1935, 1918, 1919), Stainbrook(1945), Calvin(1883 and undated 'plate book'), Belanski(1928), Webster(1921), Cooper(1973) plus Shimer/Shrock(1944) and Shrock/Twenhofer(1953), etc.
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