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Cycladophora campanula Lombari and Lazarus, 1988

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Description: Relatively large subspherical cephalis with scattered small pores, 2 long 3-bladed apical horns. Upper thorax is moderately compressed, weakly flared, covered with small irregular pores. Upper thorax outline flat to slightly inflated below shoulder joining upper thorax and cephalis. Lower thorax moderately inflated to nearly hemispherical in shape, with smoothly rounded shoulder joining upper and lower thorax. Pores are mostly of uniform medium size, with occasional much smaller pores. Pores are arranged in staggered rows. Pore shapes vary from circular to irregular to nearly triangular. A fine interior lattice-work is seen in many specimens in pores of the upper half of the lower thorax and the upper thorax. Base of thorax terminated by septal ring and short flared abdominal skirt bearing one or more rows of small circular to irregular pores.
Type: DSDP Site 278-30-CC. England finder number CI 3/4.
Origin of name: From the Latin campanula, a small bell, referring to the shape of the lower thorax.
Comments: Cycladophora campanula can be distinguished from C. humerus by its narrower lower thorax, wider lower thorax bars, rounded lower thorax outline, the frequent occurrence of more irregular pore shapes, and by the presence in many specimens of interior lattice-work in the pores of the upper lower thorax and upper thorax, a feature which is only rarely seen in C. humerus. It can be distinguished from C. b. klingi by its larger size and relatively smaller pores, and from C. roselta by its larger size, smaller pores, and more pronounced upper thorax.
Occurrence: DSDP Site 278, cores 28 to 30 (early Miocene).
Lombari & Lazarus 1988


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