sinonimi
sostantivo
Esempi
It resulted in outgrowths and duplications of the costa region of the wing.
The forewings generally are reduced to the region immediately adjacent to the costa , having separated along the radius and cubitus veins.
He differentiated his new species from S. robusta by its more numerous costae on the shell flanks.
Wall thickness is 10-26 m, becoming thicker at the corners of the chamber where it may bulge outwardly to produce coarse longitudinal costae .
It has strong divaricate ornamentation of coarse costae and/or small plicae, which bear low, close nodes, but which cover both the anterior and posterior faces of the shell.
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