Informazioni su | Parola Inglese VOLUTION

Esempi di utilizzo di VOLUTION in una frase

• The last volution below the nodose periphery has about fifteen lirae, of which about six of the upper ones are nodulous, the rest, around the anterior contracted portion, being simple and thread-like.
• The at least two whorls of the protoconch are moderately large, helicoid, one-half obliquely immersed in the first volution of the teleoconch, the periphery projecting slightly beyond the left outline of the spire.
• Plectoceras has a coiled, costate shell with a perforate (see-through) umblilcus; whorls are dorsally impressed by end of first volution but loosen in the adult stage with the mature body chamber diverging from the adjacent whorl.
• The posterior margin is very closely appressed against the preceding whorl and creeping up a little upon it, undulated in harmony with the axials of the preceding volution.

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