| 31. | Its shell is generally evolute with a narrowly rounded whorl section and tubercles along the lower flanks.
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| 32. | Shell evolute, expanding fairly rapidly; umbilicus open, perforate; whorl section ovoid to subquadrate.
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| 33. | The intellect is the first evolute of prak [ ti and is called mahat or the great one.
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| 34. | The shell is in general evolute, but deeply impressed along the inner, or dorsal, margin.
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| 35. | Duashnoceras is a stephanoceratid of variable size; evolute with a very slight uncoiling of the last whorls.
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| 36. | "Haplopleuoceras " has a small, strongly ribbed, evolute shell of about 2 volutions.
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| 37. | Shells are variable in form, both ribbed, evolute forms and smooth, involute forms are included.
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| 38. | Polymorphitid ammonites produced typically evolute shells, which are more compressed than in most members of the superfamily.
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| 39. | They lived during the Early Jurassic, Hettangian till the Sinemurian and are generally extremely evolute, many whorled.
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| 40. | "Docidoceras " has a broad, finely ribbed, evolute shell with a depressed whorl section.
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