Cincinnetina meeki (Miller, 1875)
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| Cincinnetina meeki (Miller, 1875). Upper Ordovician. Butler County, OH. Cincinnetina is one of the more common brachiopods in the Ohio/Indiana/Kentucky “U. Ordovician triangle,” and entire pavement layers are sometimes formed of its shells. Cincinnetina is also found weathered free as fully articulated individuals, as are many of these specimens.
For such an unprepossessing little brachiopod (the largest shown here is about 23mm across, but Cincinnetina is also found in tiny juvenile forms in sediments from these exposures,) Cincinnetina has had many names over the last 140 years. Originally named Orthis meeki by Miller in 1875, Cincinnetina was recombined as Dalmanella meeki by Foerste (1909) and Walker (1982); then as Resserella meeki by Shrock and Twenhofel (1953); and then as Onniella meeki by Hall (1962). In 2012, it was rechristened Cincinnetina meeki by Jin.
Note the small Tentaculites richmondensis on the fold of the central individual. Cincinnetina: Rhynchonellata – Orthida – Dalmanellidae. Jin, J. (2012). Cincinnetina, a New Late Ordovician Dalmanellid Brachiopod from the Cincinnati Type Area, USA: Implications for the Evolution and Palaeogeography of the Epicontinental Fauna of Laurentia. Palaeontology 55(1): 205-228. |
L'Isola dei Fossili Felici 
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