The Echinoid Directory

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Brissus oblongus Wright 1855, p. 36

Diagnostic Features	Test oblong, depressed before, elevated behind; dorsal surface convex; anterior border rounded, with a slight anteal sulcus; antero-lateral ambulacral areas slightly bent forwards, nearly forming right angles with longitudinal axis; postero-lateral ambulacra make an angle of 68 degrees; anterior are shoter than the posterior pair; posterior border produced and truncated; anus large, oval, and placed high up, base convex, sternal portion prominent, greatest width across the base of the postero-lateral ambulacra. [from Wright 1855]
Distribution	Miocene Malta.
Type	Natural History Museum Holotype E 1562
Classification and/or Status	Species of Brissus