1. Shen, Y., et al.: Bio-disturbance and reservoir heterogeneity of Upper Cretaceous Kh2 member in Iraq AD oilfield 30(12), 1755–1770 (2019)
2. Wang, H., et al.: Microfacies and reservoir characteristics of carbonate rocks in Khasib Formation of A oilfield, Iraq. Marine petroleum Geology 25(04), 351–362 (2020)
3. Kennedy, W.J., Garrison, R.E.: Morphology and genesis of nodular chalks and hardgrounds in the Upper Cretaceous of southern England. Sedimentology 22(31), 1–386 (1975)
4. Lethaia: An ethological framework for animal bioerosion trace fossils upon mineral substrates with proposal of a new class, fixichnia. Jordigibert, Rosadomènech, Jordimartinell (4) (2007)
5. Christ, N., Immenhauser, A., Wood, R.A., Darwich, K., Niedermayr, A.: Petrography and environmental controls on the formation of Phanerozoic marine carbonate hardgrounds. Earth-Science Reviews (2015)