. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. 374 Bulletin Museum of Comparative Zoology, Vol. 145, No. 8 Loc. 3 Loc. 4 ELIKAH FM. Poratirolites Limestone Ll_ X CO < CD Loc. 2 Julfa Beds. Text-figure 5. Stratigraphic sections of latest Permian and early Triassic formations at Kuh-e-Ali Bashi, northwest Iran. taining Claraia, that can be correlated with the Elikah Formation of the Alborz Moun- tains. The Ali Bashi Formation includes beds 52-61 of the stratigraphic section pub- lished by Stepanov et al. (1969: 35-36, 40), and is equivalent to the "Permian-T
. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. 374 Bulletin Museum of Comparative Zoology, Vol. 145, No. 8 Loc. 3 Loc. 4 ELIKAH FM. Poratirolites Limestone Ll_ X CO < CD Loc. 2 Julfa Beds. Text-figure 5. Stratigraphic sections of latest Permian and early Triassic formations at Kuh-e-Ali Bashi, northwest Iran. taining Claraia, that can be correlated with the Elikah Formation of the Alborz Moun- tains. The Ali Bashi Formation includes beds 52-61 of the stratigraphic section pub- lished by Stepanov et al. (1969: 35-36, 40), and is equivalent to the "Permian-Triassic ti'ansition beds," including the Phisonites Zone, as well as the Paratirolites limestone (unit F) as described in that publication. Lithology. The bulk of the Ali Bashi Formation consists of alternating impure aphanitic limestone and shale. Its top part is made up of grayish red limestone con- taining Paratirolites. Tliis limestone fonns such a distinct lithologic unit that it may well be distinguished formally as a member of the Ali Bashi Formation although we have refrained from doing so. For details of the lithology of the Ali Bashi Formation, the reader is referred to the description of the stratigraphic sections, especially at Lo- calities 1 and 4. Thickness. According to our measure- ments, the thickness of the formation varies from m at Locality 4 to m at Localities 2 and 3. These figures are in agreement with the total thickness given by Stepanov et al. for their beds 52-61, which was m. The locality where Golshani and Hamzepour (in Stepanov et al., 1969) measured their section lies about 300 m to the north of our Locality 4. At our Locality 1, which lies about 200 m south of our Locality 2, the thickness of the formation is m. The thickness of the uppermost part of the formation, herein referred to as Para- tirolites limestone, is m at Locality 1, m at Locality 2, m at Locality 3, and m at Locality 4. At the locality des
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