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Calocycletta caepa
Moore, 1972
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Description - Add description
Cephalis ovate, lobed. with sparse circular to subcircular pores and bearing a conical (early forms) to slightly bladed (late forms) apical horn. Thorax subspherical to campanulate. with circular pores hexagonally arranged and longitudinally aligned. External lumbar stricture absent in early forms but distinct in late forms. Abdomen lighter and more delicate than thorax, cylindrical in shape, containing subcircular to circular pores which may show longitudinal alignment and hexagonal arrangement (early forms). Late forms may have a very light, very irregularly pored abdomen that appears almost spongy. Abdomen terminates in five to fourteen triangular or spike-shaped feet which are usually very short and irregularly spaced.
Dimensions:
Based on 30 specimens. Length of apical horn 62-130 μm, of cephalis 34-43 μm, of thorax 62-110 μm, of abdomen 43-158 μm of feet 5-14 μm, Breadth of cephalis 34-43 μm, of thorax 101-134 μm, of abdomen (distally) 58-101 μm.
Remarks:
Only if the abdomen and terminal feet are preserved can early forms of C. caepa be distinguished from C. virginis and C. serrata. The bladed apical horn, campanulate thorax and very delicate abdomen of later forms aid in their distinction. | | Moore 1972 |
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