Late Pennsylvanian Fusulinidae from the Gaptank Formation, west Texas

Eight fusulinid assemblage subzones are recognized in the Late Pennsylvanian part of the Gaptank Formation. The oldest subzone correlates with the lower part of the Linn Subgroup, Kansas City Group (middle Missourian), Midcontinent region, and the Brownwood Shale Member, Graford Formation, Canyon Group, central Texas. The youngest subzone correlates with the Speck Mountain Limestone Member, Thrifty Formation, Cisco Group, central Texas, and probably also with the lower or middle part of the Wabaunsee Group, Virgilian Series, Midcontinent region. No major depositional break occurs between the lowest and highest of these assemblage subzones. Four lithologic facies within the formation contain different associations of fusulinid species. Ten new species of Triticites are described. A species of Waeringella is reported from the formtion for the first time.

This record provided courtesy of AGI/GeoRef.

This article has been cited by other articles:

				G. Della Porta, E. Villa, and J. A. M. Kenter FACIES DISTRIBUTION OF FUSULINIDA IN A BASHKIRIAN-MOSCOVIAN (PENNSYLVANIAN) CARBONATE PLATFORM TOP (CANTABRIAN MOUNTAINS, NW SPAIN) Journal of Foraminiferal Research, October 1, 2005; 35(4): 344 - 367. [Abstract] [Full Text] [PDF]