单词	coniform
释义	coniform /ˈkəʊnɪfɔːm / adjective rare Having the shape of a cone.In 1982, he demonstrated that the coniform elements of Phakalodus tenuis, a protoconodont, are histologically similar to the grasping spines of the living chaetognath, Sagitta.... It is a markedly asymmetrical, proclined to erect, coniform element that is posterolaterally compressed with two costae; one which is anterolateral and the other postero-lateral to the cusp. The coniform elements are laterally compressed with broad cusps that bear thinly keeled posterior and anterior cusp margins and lateral costa on each lateral cusp face. Origin Late 18th century: from Latin conus 'cone' + -iform.
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