Abstract
AbstractA collection of decapod fossils from the Miocene St. Marys Formation, Little Cove Point Member (Maryland, USA), yielded six species belonging to three genera of brachyuran crabs, NecronectesA. Milne-Edwards, 1881, CallinectesStimpson, 1860, and CancerLinnaeus, 1758. Cancer included four species, Cancer irroratusSay, 1817; C. borealisStimpson, 1859; and two new species, C. nancei and C. zahrae. Necronectes is represented by N. drydeniRathbun, 1935. Callinectes was also represented by a single species, C. sapidusRathbun, 1896. Most of the fossils were small relative to normal adult size, suggesting that the environment served as a nursery to developing individuals. The paleoecology of Chesapeake Bay was similar to the present-day ecology based on study of recent faunas, lithology, and paleoecology. The paleoenvironment was a shallow embayment within the temperate climate zone.
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