| 21. | As in the lower molariforms, the cusps are connected by transverse ridges and separated by furrows.
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| 22. | Secondary arched diagonal ribs, called tiercerons, span from the springers to the transverse ridge ribs.
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| 23. | Transverse ridges, transverse cracks and radial cracks form in displaced material on the foot of the slump.
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| 24. | The prothorax is small and is flattened dorsally into a shield-like disc which has two transverse ridges.
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| 25. | Their rostral sawteeth lack prominent transverse ridges on the basal ledges, and the large teeth are not posteriorly serrated.
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| 26. | The seeds are sharply quadrangular in shape, about 1mm long, and marked with 3 or 4 transverse ridges.
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| 27. | Shells are depressed, irregularly annulated cyrtocones with V-shaped hyponomic sinuses, ornamented by longitudinal and transverse ridges.
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| 28. | The whorls are encircled with three transverse ridges, and there is a conspicuous ridge around the region of the umbilicus.
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| 29. | The term zibar comes from the Arabic word to describe " rolling transverse ridges . . . with a hard surface ".
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| 30. | Stitching of the muscles is carefully performed to avoid creating transverse ridges, and so produce a ridged interior surface in the vagina.
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