regular echinoids An informal name for sea urchins (class Echinoidea) in which the anus is enclosed within the apical system. The term includes the Perischoechinoidea, Diadematacea, and Echinacea.
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Euechinoidea , Euechinoidea (class Echinoidea) Sub-class of sea-urchins in which the normally rigid test is composed of five ambulacra and five interambulacra, each… Regular Sample , regular sample (systematic sample) One of a number of samples taken at regular intervals (e.g. by the use of regularly spaced quadrats along some env… Scapula , Skip to main content Scapula scapula •ampulla, bulla, fuller, Müller, pula, puller •titular • Weissmuller • wirepuller •incunabula, tabular •preambul… Prism , Prism In Euclidean geometry, a prism is a three-dimensional figure, or solid, having five or more faces, each of which is a polygon. Polygons, in tur… Spain, Portugal, Italy, Greece, and the Balkans , pula •ampulla, bulla, fuller, Müller, pula, puller •titular • Weissmuller • wirepuller •incunabula, tabular •preambular • glandular • coagula •angula… irregular , ir·reg·u·lar / iˈregyələr/ • adj. 1. not even or balanced in shape or arrangement: her features were too irregular. ∎ occurring at uneven or varying…
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