| Therefore, in these early stages, the boundary can be drawn between these aboral plates and those formed adoral to the terminals. |
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| These structures improve the resistance of the ammonite septum to pressure upon its main surface in both adapical and adoral directions. |
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| The apical surface of the pouch is smooth, whereas its sides as well as the adoral surface are lobate. |
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| The coiled shells are mostly nearly complete, but often the body chambers are broken ventrally and adoral parts are missing. |
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| The presence of a weak shadow next to the animal suggests that it is raised up on its adoral radioles. |
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| These individuals are rare, are less than 15 mm in test diameter, and contain spines very similar to the thin, gracile, lightly ornamented, adoral spines of larger specimens. |
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| To withstand hydrodynamic forces, sea urchins rely on their adoral tube feet, which are specialized for attachment. |
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| In all cases the apical part of the conch is more heavily overgrown than in adoral sections. |
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| The feeding cavity should remain designated as a prostomial cavity, rather than the adoral, or buccal, cavity. |
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| The pouch is broader at its adoral edge than towards the apex. |
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| I now prefer to consider it a specialized adoral seta, presupposed that the rutellum is also a specialized adoral seta. This means that paralabial and adoral are synonymous. |
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| Lateral lips with two pairs of adoral setae, setiform, barbed. |
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