| 1. | The Houldjinian's lower boundary is the approximate base of the Priabonian age.
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| 2. | The lower boundary of thorax assumes the shape of a somewhat rounded arch.
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| 3. | The lower boundary is an unconformity with the underlying Skiddaw Group.
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| 4. | The latter had suggested the Emba River as the lower boundary.
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| 5. | The anterior part of the lower boundary of abdomen occasionally forms a deep curve.
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| 6. | The deposits, which are the upper and lower boundary shale.
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| 7. | The wood itself is an ancient deer park, with an earthwork along its lower boundary.
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| 8. | The lower boundary of thorax assumes a semicircular arch.
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| 9. | The upper boundary layer of the Arshantan can be the lower boundary of the Priabonian
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| 10. | At the upper and lower boundaries, \ zeta _ a and \ zeta _ b, respectively.
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