SCULPTOBACULITES Loeblich and Tappan, 1984

 

 

Type species: Ammobaculites goodlandensis Cushman and Alexander, 1930 (*803), p. 8; OD.Scuiptobaculites Loeblich and Tappan, 1984 (*1920),p. 1161.

Evobaculites O. A. Korchagin, 1985 ( *1717), p. 602; type species: Evobaculites loshkharvicus O. A. Korchagin, 1985: OD.

Test free, large and robust, planispirally enrolled and slightly evolute early stage may have up to three or more whorls, central area of test depressed to excavated and umbilical, periphery sharply truncate, chambers inflated to angularly lobulate, five to ten in the prominent coil, may have a much reduced uniserial and rectilinear portion commonly of one or two, rarely three chambers; wall agglutinated, simple in structure, of coarse sand and other mineral grains, but in carbon-ate facies may agglutinate oolites, calcite prisms from Inoceramus shells, shell fragments, or other foraminifers; aperture a low arch at the base of the apertural face in the enrolled portion, becoming terminal and round in the uncoiled chambers. Jurassic to M. Cretaceous (Albian to Cenomanian); USA: Oklahoma, Texas; USSR: Gissar, Tadzhik.

 

Remarks: Scuiptobaculites differs from Ammobaculites in the evolute to advolute coil, depressed and excavated umbilical region, and much reduced uniserial portion.