Euvola reliqua (Brown & Pilsbry, 1913)
BROWN, A. P. & H. A. PILSBRY. 1913. Fauna of the Gatun Formation, Isthmus of Panama. Part 2. Proceedings of the Academy of Natural Sciences of Philadelphia, 64: 509-519 [p. 510, pl. 24, fig. 3]
1913 Pecten (Euvola) reliquus Brown & Pilsbry, 1913
A. P. Brown & H. A. Pilsbry, 1913, plate 24.
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«The left valve is strongly convex, the right almost flat, being very gently convex towards the beaks, concave on each side of the middle. Sculpture of about 24 strong ribs. In the left valve they are a little flattened on the summits, have very steeply sloping sides, and are parted by intervals decidedly narrower than the ribs. Over all there is a fine concentric sculpture of delicate laminae, which remain much more prominent in the intercostal spaces. In the right valve the ribs are noticeably narrower, about equal to their intervals, and they are almost obsolete in a rather wide band at the anterior end. The anterior ear is ribless. The concentric sculpture is less developed than in the convex valve. The height is
52 mm. in the largest co-type—a right valve. Gatun Formation at the Spillway. This scallop may be readily recognized, even in fragments, by its finer sculpture, which is unlike other Isthmian species.» AMOS PEASLEE BROWN & HENRY AUGUSTUS PILSBRY, 1913
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