| 1. | Sutures are ammonitic, with digitate lobes and submonophyllic saddles.
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| 2. | It has globoid, ornamented conidia with long digitate projections.
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| 3. | The mine has the form of an upper surface digitate-blotch mine.
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| 4. | The more developed " Gymnites " has deeply digitate ammonitic sutures.
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| 5. | Suture elements are simply digitate with digits restricted to the lower half of lobes.
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| 6. | The red inflorescences are usually unbranched or digitate.
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| 7. | The mine has the form of an elongate or digitate blotch along the midrib.
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| 8. | The mine has the form of a digitate blotch under the epidermis of the upper surface.
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| 9. | The intertentacular lobes are simple or digitated, separate or united across the front, sometimes obsolete.
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| 10. | The mine has the form of a blotch mine or sometimes an upper surface digitate-blotch.
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