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Home Latest Update :  3 Tuesday April 2012
Other Genus
OrderFORAMINIFERIDA
Sub OrderFUSULININA
Super FamilyARCHAEDISCACEA
FamilyLASIODISCIDAE
Genus HOWCHINIA

HOWCHINIA Cushman, 1927
 
 
Type species: Patellina bradvana Howchin, 1888 (*1560), p. 544; OD.
Howchinia Cushman, 1927 (*742), p. 42.Monotaxis Vissarionova, 1948 (*3295), p. 190 (non
Monotaxis Bennett, 1830, nec Hulst, 1898; nec Hampson, 1900); type species: Tetrataxis conica var. gibba
von MöIler, 1879 (*2160), p. 71; OD.
Vissariotaxis Habeeb and Banner, 1979 (*1351), p. 83: type species: Monotaxis subconica Brazhnikova and Yartseva, 1956 (*357), p. 63 (non Vissariotaxis Mamet. 1970); OD.
Test free, conical, proloculus followed by undivided tubular chamber coiled in a high spire around an umbilical region that is filled with fibrous microcrystalline calcite, spiral suture depressed, bridged by numerous extensions of shell matter that separate small pits; wall calcareous, dark, microgranular, and may have a second thin fibrous radial layer on the base of the spire; aperture terminal, simple. L. to M. Carboniferous (Visean to Moscovian); England; Belgium; USSR; Iran; USA: Alaska; Canada.
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