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Home Latest Update :  3 Tuesday April 2012
Other Genus
OrderFORAMINIFERIDA
Sub OrderTEXTULARIINA
Super FamilyORBITOLINACEA
FamilyORBITOLINIDAE
Sub FamilyDICTYOCONINAE
Genus CUSHMANIA

CUSHMANIA Silvestri, 1925
 

 
 
Type species: Conulites americana Cushman, 1919 (*715), p. 43 (recte americanus); OD.
Cushmania Silvestri, 1925 (*2957), p. 52.
Orbitolinoides Vaughan, 1945 (*3270), p. 22; type species: Orbitolinoides senni Vaughan, 1945; OD. Heterodictyoconus Butterlin and Moullade, 1968 (*460), p. 12; type species: obj.. OD.
Dictyoconus (Cushmania) Hottinger and Drobne, 1980 (*1555), p. 247, 256 (nom. transl.).
Test conical, apical proloculus followed by a few incomplete annular chambers that rep-resent a reduced early spiral stage, and then by numerous low rectilinear chambers that enlarge rapidly in diameter as added, base of cone convex in the early stage, later flattened to concave; wall with thin marginal epider­mis, overlying a series of narrowly spaced, short vertical exoskeletal beams that alter­nate in position with the marginal apertural openings, a shorter secondary beam occurs in front of each aperture, and a third order of shorter beams also may be present, beams intersected by at least two orders of horizon­tal rafters that parallel the septa, the series of beams and rafters producing a complex retic­ular subepidermal network; the endoskeletal pillars are circular in section near the under-lying septum but semicircular in section toward the chamber roof; numerous apertures scattered over the base of the cone. M. Eocene; Caribbean: Leeward Islands: St. Barthelemy; Cuba; Bahamas; USA: Florida.
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