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Lithopera baueri Sanfilippo and Riedel, 1970

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Lithopera (Glomaria) baueri Sanfilippo and Riedel. n. sp.
Plate 2. figures 1-2


Description: Elongate, approximately ellipsoidal shell, somewhat tapering toward the cephalis and usually rounded but rarely flattened distally. Cephalis small, spherical, poreless or sparsely porous, sometimes partly enclosed by the thoracic wall, in some specimens with a
small apical spine. From the base of the cephalis, primary lateral and dorsal spines extend in the proximal part of the thoracic wall of some specimens. Thorax closed distally, usually rounded, sometimes tapered but less acutely than toward the cephalis, and in some
specimens with one or more small, irregular terminal spines. No third segment distinguished. Proximally, the thoracic wall is of loose spongy meshwork in most specimens, but in some it is lamellar, though with characteristically irregular and divided pores; distally (occasionally set off by a change in contour) the thoracic wall has smaller, more regular pores.


Measurements: Based on 30 specimens from cores AMPH 6P, 52-54 cm . ; DODO 39P, 184-186 cm. and 323-325 cm.; PROA 96P. 235-237 cm. and 439-441 cm. Total length 125-220 m. Maximum breadth 80125 m.


Remarks: This species is distinguished from L. renzae by having no third segment, and by the thorax usually being longer and more spongy. It is distinguished from L. thornburgi by the generally more rounded termination of the shell, and by the proximal part of the spongy thoracic wall not being sufficiently thick to enclose the cephalis. This species is named after Robert F. Bauer, chairman of the board of Global Marine Inc.
Sanfilippo and Riedel 1970


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