21
4
November
835
846
REAUGH, A. 1978. A new species of Cymatiosphaera (Acritarcha) with constant field tabulation from the Devonian of Tennessee. Palaeontology, 21, 4, 835–846.
Ann Brooke Reaugh The acritarch Cymatiosphaera peifferi sp. nov. from the Devonian Chattanooga shales in north-eastern Tennessee, U.S.A., has a characteristic arrangement of polygonal areas, or fields, on the central body. Two distinct kinds of fields, polar and subequatorial, differ in form and symmetry. Fields are arranged according to a constant tabulation pattern (1:5:5:1) with pentagonal symmetry developed around the polar field on each hemisphere. The Palaeontological Association (Free Access)