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Cyclogyra cf. involvens   

 found in material provided by Johann  at  Buttenheim/Germany     Lower Jurassic (Lias Delta 1-2)   Taxon Profile
Cyclogyra involvens, Buttenheim

Different views of one specimen of Cyclogyra involvens (synonymous with older name Cornuspira involvens)

The classification is based upon: Riegraf, W. (1985): Mikrofauna, Biostratigraphie und Fazies im Unteren Toarcium Sued-westdeutschlands und Vergleiche mit benachbarten Gebieten in Tuebinger Mikropalaeontologische Mitteilungen Nr. 3