Keywords : Late Campanian


Some Ostracoda Species of Tanjero Formation (Late Campanian- Maastrichtian) of Diana Area, NE Iraq.

Iraqi National Journal of Earth Sciences, 2018, Volume 18, Issue 1, Pages 27-40

Eleven ostracode species belonging to eight genera were described and illustrated for the first time from Tanjero Formation (Late Campanian- Maastrichtian) at Diana, North East Iraq, which six species are new: Cytherella suranensis sp. nov.; Cytherella omarians sp. nov.; Bairdia dianaensis sp. nov.; Bythocypris sirwanensis sp. nov.; Bairdoppilata halabijaensis sp. nov. and Limburgina kaniensis sp. nov.:
Cytherella suranensis sp. nov. ; Cytherella omarians sp. nov.; Bairdia dianaensis sp. nov.;Bythocypris sirwanensis sp. nov.; Bairdoppilata halabijaensis sp. nov. and Limburgina kaniensis sp. Nov

Foraminiferal Biostratigraphy of Bekhme Formation (Late Campanian) in Dohuk Area/ Northern Iraq

Layla Y. Al-Haidary; Majid M. Al-Mutwali

Iraqi National Journal of Earth Sciences, 2012, Volume 12, Issue 3, Pages 41-72

The lithology and biostratigraphy of Bekhme Formation and lower part of Shiranish Formation have been investigated within a well – exposed section at the southern limb of Bekhair anticline, Dohuk area, north of Iraq. The section consists of marly limestone, limestone, conglomerate and marl. The lower contact of Bekhme Formation is not exposed in the studied area. The upper contact is unconformably overlain by the Shiranish Formation which consists of marl, limestone and marly limestone.The sequences of the section are characterized by rich foraminiferal faunas, where forty - eight planktonic species belonging to fourteen genera besides fifty - three benthonic species and subspecies belonging to forty genera have been recognized. The study of planktonic foraminifera resulted in the recognition of four biozones, these are from older at base:
4- Gansserina gansseri Interval Zone (part) (CF7).
3- Globotruncana aegyptiaca Interval Zone (CF8).
2- Globotruncanita stuarti – stuartiformis Partial Range Zone (CF9).
1- Globotruncanita calcarata Total Range Zone (part) (CF10).
The larger benthonic foraminiferal fauna, which appears within five stratigraphic intervals permits the recognition of: Orbitoides medius– Lepidorbitoides minor Assemblage Zone. Planktonic and benthonic zones were correlated with other zonal schemes in and outside Iraq. The studied section is appeared within late Campanian age.
Key words: Bekhme Formation, Late Campanian, Planktonic Foraminifera, Zone.