Paleoecology of some upper cretaceous formations from selected wells northwest and middle Iraq

الملخص EN

On the basis of the bio contents, lithological features and analysis of the microfiches, an attempt is made to establish the nature of paleoecology and depositional environments of some Upper Cretaceous formations from northwest and middle Iraq, of which the successions are represented by the formations from the oldest to the youngest, are Khasib, Tanuma, Sa'di, Mushorah, Hartha and Shiranish.

A wide spectrum of environmental types distributed between deep and shallow marine environments.

The implication of pale ecological interpretations for different Ostrscode species and other fossils recorded in the studied sections highlights the strong correlation between the environmental parameters in particular the depths and the lifestyle of these organisms including specific morphologies and faunal abundance.

In addition to that from palaeocological point view the identified bio contents represent a southern shelf tithes fauna.