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Eucyrtidium pseudoinflatum Weaver, 1983

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Shell truncate fusiform, inflated; abdomen and postabdominal segments are marked or seperated by internal septa. Cephalis spherical, partially sunken into the thorax. Contains a few small, circular pores. Collar stricture generally slight or indistinct. Thorax inverted conocal with 4-5 rows of small pores arranged in desicussate rows. Lumbar stricture marked by distinct change in contour. Abdominal segment contains 7-8 longitudinal furrows in which lie circular pores approximately twice the size of the thoracic pores. Shell reaches maximum width within this segment. First postabdominal segment truncate conical, approximately half the length of the abdomen.; contains an equal number of furrows, and pores of a smaller diameter. In well-preserved specimens there is a second postabdominal segment that is truncate conical and contains only a few small, irregularly spaced pores.

E. pseudoinflatum resembles E. inflatum Kling, 1973, in its overall size and inflated appearance. However, it differs from E. inflatum in having a greater number of longitudinal furrows, smaller pore diameter, and a maximum width which is attained in the mid to upper first abdominal segment. E. inflatum Kling attains a maximum width in the lowermost abdomen or at the division of the abdomen and fourth segment.

Total length of shell, 145-175µm; cephalis, 15-22µm; thorax, 30-38µm; abdomen, 50-75µm; all postabdominal segments , 35-52µm; maximum shell width, 90-110µm; diameter of pores, 2-6µm. Measurements based on 25 specimens from DSDP Samples 278-10-2,43-45cm, 278-10-3,48-50cm, and 278-10-4,54-56cm.
Weaver 1983











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