AEOLOSTREPTIS Loeblich and Tappan, 1957

 

 

Type species: Buliminella vitrea Cushman and Parker, 1936 (*837), p. 7: OD.

Aeolostreptis Loeblich and Tappan. 1957 (*1897). p. 227.

Test ovate in outline, circular in section, base bluntly rounded, early stage in a low trochospiral coil of about three whorls and about six very low Innate chambers per whorl as seen from the test base, then abruptly increasing in chamber height and reduced number per whorl, final whorl of three cham­bers comprises most of the test height, inter-cameral sutures strongly oblique. slightly depressed: wall calcareous, finely perforate, optically granular, surface smooth: aperture a small loop at the base of the final chamber face perpendicular to the suture and with a narrow bordering lip at the distal margin. U. Cretaceous (Santonian to Campanian); USA: Mississippi, Texas.

 

Remarks: Although previously regarded as a synonym of Caucasina, Aeolostreptis differs in the much broader and more com­pact test, higher, strongly overlapping and less inflated chambers, and small and rela­tively low aperture.