Flabellipecten gatunensis tapeinus Woodring, 1982
WOODRING, W. P. 1982. Geology and paleontology of Canal Zone and adjoining parts of Panama. Description of Tertiary mollusks (Pelecypods: Propeamusiidae to Cuspidaridae; additions to families covered in P 306-E; additions to Gastropods; Cephalopods). United States Geological Survey Professional Paper, 306-F: 541-759, pls.: 83-124. [p. 585, pl. 113, fig. 17; pl. 122, figs. 9-10]
«FIabellipecten gatunensis tapeinus Woodring, n. subsp.
Plate 113, figure 17; plate 122, figures 9, 10 Of medium size, right and left valves slightly convex. Right valve sculptured with 20 to 22 ribs, very low throughout, especially near ventral and lateral margins, where they practically disappear or almost disappear. Ribs wider than interribs. Left valve sculptured with 20 narrow ribs, somewhat subdued near ventral margin, strongly subdued near lateral margins. Ribs narrower than interribs. Interior lirae of small left (?) valve extending about a third of distance from ventral margin to umbonal area.
Length 96.5 mm, height 90 mm, convexity (both valves) 21.5 mm (type). Type (articulated specimen) : USNM 646992. Type locality: 207 (USGS 16969, Caribbean coast, roadcut on south side of Rio Lagarto about 230 m south of Lagarto, Panama), Chagres sandstone. Flabellipecten gatunensis tapeinus is represented in the Chagres sandstone by the articulated type and an incomplete left valve. Three right valves and a small left (?), only the interior of which is exposed, from the middle part of the Gatun formation are assigned to it. Both valves of the type are slightly convex and the other left valve from the Chagres also is slightly convex. The right-valve ribs are lower than those of the other subspecies, even lower than those of other subspecies that are subdued near the ventral margin. Occurrence: Middle part of Gatun formation (middle Miocene), eastern area, locality 139g; Chagres sandstone (late Miocene or early Pliocene), localities 199, 207.» WENDELL PHILLIPS WOODRING, 1982
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W. P. Woodring, 1982, plate 113.
W. P. Woodring, 1982, plate 122.
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