ASGP (2024), vol. 94: 399–408

BULBOBACULITES ATTASHENSIS SP. NOV., A NEW AGGLUTINATED FORAMINIFERA FROM THE MIDDLE JURASSIC D7 ATTASH MEMBER OF THE DHRUMA FORMATION, CENTRAL SAUDI ARABIA

Chernoh Mohamed JALLOH (1), Syouma HIKMAHTIAR (1), Asmaa KORIN (1), Sinatrya D. PRAYUDI (1), Adam FHEED 2 & Michael A. KAMINSKI (1*)

1) King Fahd University of Petroleum and Minerals, Geosciences Department Dhahran, 31261, Saudi Arabia; e-mails: g202213980@kfupm.edu.sa; syoumahikmahtiar@yahoo.co.id; asmaakorin@gmail.com; g202114310@kfupm.edu.sa; kaminski@kfupm.edu.sa
2) Faculty of Geology, Geophysics and Environmental Protection, Department of Energy Resources, AGH University of Krakow, Mickiewicza 30, 30-059 Kraków, Poland; e-mail: adam.fheed@gmail.com
*) Corresponding author

Jalloh, C. M., Hikmahtiar, S., Korin, A., Prayudi, S. D., Fheed, A. & Kaminski, M. A., 2024. Bulbobaculites attashensis sp. nov., a new agglutinated foraminifera from the Middle Jurassic D7 Attash Member of the Dhruma Formation, Central Saudi Arabia. Annales Societatis Geologorum Poloniae, 94: 399–408.

Abstract: The new species Bulbobaculites attashensis sp. nov. is described from the rhythmite limestone and marl sediments of the D7 Attash Member of the Middle Jurassic (lower Callovian) Dhruma Formation in Central Saudi Arabia. This species is characterized by its coarsely agglutinated wall, streptospiral initial coiling, and a distinct bulbous initial coil. The occurrence of this species in limestone-marl rhythmite deposits suggests its adaptation to fluctuating environmental conditions, including changes in water depth, salinity, and nutrient flux, associated with rhythmic sedimentation.

Manuscript received 15 October 2024, accepted 20 December 2024