Conus (Dauciconus)
taphrus (Woodring, 1970)
Descrizione e caratteristiche:
Small, moderately wide at shoulder, edge
of shoulder angulated. Protoconch and earliest post-protoconch whorls
missing. Earliest preserved whorls carinate and obscurely tuberculate;
tubercles obscure owing to wear. Succeeding whorls overlapping to edge of
shoulder of preceding whorl, bearing a narrow channel adjoining suture. Anal
fascicle flat, bearing growth threads and microscopic spiral lineation. Lower
part of body whorl weakly sculptured. Entire whorl showing microscopic spiral
lineation. Height (almost complete) 28.2 mm, diameter 15 mm (type).
Type:USNM645T48.
Type locality: 161d (USGS 8366,
Cuts west of Gatun Dam, station 3a, Canal Zone), middle part of Gatun
formation.
The type the only specimen was
collected at a locality in the middle part of the Gatun formation west of Gatun
Dam. Though it may not be mature, the sutural channel is a distinctive feature.
Occurrence: Middle part of
Gatun formation, western area (middle Miocene), locality 161d
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Conus taphrus (1a) USNM 645748 Plate 57, figures 1, 7 Type. Height (almost complete) mm. 28,2 x 15 Locality 161d. Middle part of Gatun
formation - Panama |
Bibliografia Consultata
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(1) - Woodring, W. P., 1970. Geology
and Paleontology of Canal Zone and Adjoining Parts of Panama. U.S.
Geological Survey Professional Paper, 306-D pag. 346-349 = 459-462
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(1a) -
Woodring, W. P., 1970. Geology and Paleontology of Canal Zone and Adjoining
Parts of Panama. U.S. Geological Survey Professional Paper, 306-D pag. 346-349 = 459-462
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