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biostratigraphy and paleoecology of cretaceous/tertiary boundary in ...

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PLATE -16<br />

Scale bar represents magnification on the specimens<br />

Figs 1-3 Abathomphalus mayaroensis (Bolli) . 1, 2 spiral view, 3 umbilical view,<br />

Tanjero Formation, Late Maastrichtian. Dokan, Specimen from<br />

R. fructicosa Zone<br />

Figs 4, 5 Pseudoguembel<strong>in</strong>a costulata (Cushman), Tanjero Formation, Late Maastrichtian,<br />

Sirwan, Specimen from P. hariaensis Zone<br />

Fig 6 Pseudoguembel<strong>in</strong>a hariaensis. Nederbragt. Tanjero Formation, Late Maastrichtian.<br />

Dokan, Specimen from P. hariaensis Zone<br />

Figs 7, 8 Pseudoguembel<strong>in</strong>a palpebra. Bronnimann & Brown. . Tanjero Formation, Dokan,<br />

Specimen from P. palpebra Zone<br />

Fig 9 Laeviheterohelix glabrans (Cushman) Tanjero Formation, Late Maastrichtian.<br />

Sirwan, Specimen from P. hariaensis Zone<br />

Figs 10, 11 Pseudoguembel<strong>in</strong>a excolata (Cushman) Tanjero Formation, Late Maastrichtian.<br />

Sirwan, Specimen from P. hantken<strong>in</strong>oides Zone<br />

Fig 12 Plummerita hantken<strong>in</strong>oides (Bronnimann). Tanjero Formation Late Maastrichtian<br />

Dokan, Specimen from P. hantken<strong>in</strong>oides Zone

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