I am a stratigrapher and micropaleontologist. My main interests are: (1) Precise dating, large-scale correlations and improvement of the Geologic Time Scale, (2) Climatic and biotic events in a Greenhouse World, (3) Evolution of marine life. As a micropaleontologist, I am a specialist of calcareous nannofossils. As a stratigrapher, I am specialized in cyclostratigraphy and carbon-isotope stratigraphy. My focus intervals are the Jurassic, Cretaceous, the Paleogene and the Quaternary.

• The Eocene–Oligocene Climate Transition in the Southern Tethys: Calcareous Nannofossil Response and Element Geochemistry in Paleobiodiversity and Tectono-Sedimentary Records in the Mediterranean Tethys and Related Eastern Areas. Jihede Haj Messaoud, Chokri Yaich, Johannes Monkenbusch, and Nicolas Thibault. Arabian Journal of Geosciences (2018). https://doi.org/10.1007/978-3-030-01452-0
  

• The Eocene–Oligocene transition in the South‐Western Neo‐Tethys (Tunisia): astronomical calibration and paleoenvironmental changes. Messaoud, J.H., Thibault, N., Yaich, C., Monkenbusch, J., Omar, H., Ben Jemai, H.F., Watkins, D.K. Paleoceanography and Paleoclimatology 35 (2020).
  https://doi.org/10.1029/2020PA003887.

• Integrated stratigraphy of the middle-upper Eocene Souar Formation (Tunisian dorsal): Implications for the Middle Eocene Climatic Optimum (MECO) in the SW Neo-Tethys. Messaoud, J. H.., Thibault, N., Bomou, B., Adatte, T., Monkenbusch, J., Spangenberg, J.E., Aljahdali, H, M., Yaich, C. Palaeogeography, Palaeoclimatolpgy, Palaeoecology. 581 (2021). https://doi.org/10.1016/j.palaeo.2021.110639
  

• Ph.D. Geosciences and Natural Resources Management, Copenhagen University (KU, Denmark), May 2021.

• Geological Engineer, National Engineering School of Sfax (ENIS, Tunisia), 2015.

• 2022 - Postdoctoral fellow, KAUST, Thuwal, Saudi Arabia
• 2016-2021- Ph.D. student/Assistant Teacher (Copenhagen University, Denmark)
• 2016- QHSE supervisor (Universe services petroleum company, Tunisia-Libya)

• International Association of Sedimentologists
• The Micropaleontological Society
• European Geosciences Union
• Nordic Sedimentary Research Group
• American Geophysical Union
• IGCP-652, Cyclostratigraphy Project

• Matsumae Fellowship Japan
• Carlsberg fellowship
• IODP-USIO Diversity Internship
• Copenhagen University distinguished scholarship

• Ali I. Al-Naimi Petroleum Engineering Research Center (ANPERC)
• Physical Science and Engineering Division (PSE)