科研之友
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摘要
Mecaster mutabilis (Lambert, 1933) is being recorded and described from the Middle Cretaceous Nodular Limestone of Bilthana of the western region of the Bagh Beds. This occurrence suggests that the Nodular Limestone is the westerly extension of the marine Khadlu-Mongra Nodular Limestone and is deposited under subtidal, very shallow marine, low-energy environment. Taking into consideration the overall age of the Bagh sediments in the western region, the deposits correspond to Late Albian-Cenomanian-Turonian and Senonian (Campanian?) global transgressive event.
- 出版日期2011-12
