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Collosphaera sp. det. Benson, 2003

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Benson, 1966, p. 119-120; pl. 2, figs. 1-2:

Polysolenia sp.

Single shell ranging from spherical or subspherical to ellipsoidal with rough thorny surface and numerous infilled pores. Surface in many areas with numerous low, intersecting ridges which appear to represent polygonal frames surrounding both open and infilled pores; thorns arise from the points of intersection of the ridges. Subcircular to subelliptical pores highly irregular in size and arrangement, separated by wide, intervening bars many of which represent infilled pores; 10-23 pores on half the circumference. A few of the larger pores have low raised rims, suggestive of tubules, surrounding them either wholly or in part.

Measurements; based on 30 specimens from stations 27, 34, and 60: diameter of spherical shells, some of which may represent end views of ellipsoidal shells. 62-102 Ám; major diameter of ellipsoidal shells 87-105Ám; minor diameter 63-91 Ám.

Remarks. No species illustrated in the literature could be identified with this species. Because of its uncertain generic as well as familial affinity and the lack of type material for study, no new name is proposed for this taxon.

Distribution. This species is very rare in the Gulf sediments and occurs only at stations 27, 34, 46, 56, 60, 71, 81, and 106. It has a slightly greater frequency in the southern Gulf stations, thus appears to be oceanic.

Benson 1966


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