“…However, the number of whorls and the structure of chambers, chamberlets, septula and preseptal passage are recognized for observed alveolinids in the Sarvak Formation. Moreover, the structural elements of investigated alveolinids compared with several previous works that consisted of the various sections (sagittal, axial and tangential type; e.g., Calonge et al, 2002; Caus et al, 2009; Dousti Mohajer, Afghah, Dehghanian, & Sheikh Zakariaii, 2021, Dousti Mohajer, Afghah, Dehghanian, & Abyat, 2021; Ghanem & Kuss, 2013; Ghanem et al, 2012). The structural form of chamber and chamberlets coincided with the previous works that were recorded as common alveolinids in the Middle East (e.g., Afghah & Fadaei, 2015; Afghah, Yousefzadeh, & Shirdel, 2014; Dousti Mohajer, Afghah, Dehghanian, & Abyat, 2021; Dousti Mohajer, Afghah, Dehghanian, & Sheikh Zakariaii, 2021; Dousti Mohajer et al, 2022; Ghanem et al, 2012; Ghanem & Kuss, 2013).…”