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Species / Rimella Peruviana

Rimella Peruviana

Species.RimellaPeruviana History

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Changed line 12 from:
'''Stratum typicum''': Chira Formation, Upper Eocene marine shale/ash
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'''Stratum typicum''': Chira Formation, upper Eocene marine shale/ash
July 07, 2012, at 11:09 PM by Ulrich Wieneke -
Changed lines 8-9 from:
*"Shell of medium size, a spire of moderate length and a sculpture of coarse riblets and finer spirals; nucleus unknown; post-nuclear whorls 4+, the spire-whorls fairly large and about one-half the length of the whole shell; rib-like varices are present on some of the spire-whorls and roughly spaced about 120 degrees apart; on the last whorl, a varical rib is present, not quite opposite the outer lip so that the ventral side of the shell appears slightly depressed and the dorsal side convex to slightly humped; sculpture consists of even, linear riblets which number about 21 on the last turn; the spaces between the riblets are wider, concave and marked with fine spiral lines; anterior canal and anterior side of aperture broken; the posterior canal is continued as in Rimella fissurella along a ridge of callus to the tip of the spire."
to:
*"Shell of medium size, a spire of moderate length and a sculpture of coarse riblets and finer spirals; nucleus unknown; post-nuclear whorls 4+, the spire-whorls fairly large and about one-half the length of the whole shell; rib-like varices are present on some of the spire-whorls and roughly spaced about 120 degrees apart; on the last whorl, a varical rib is present, not quite opposite the outer lip so that the ventral side of the shell appears slightly depressed and the dorsal side convex to slightly humped; sculpture consists of even, linear riblets which number about 21 on the last turn; the spaces between the riblets are wider, concave and marked with fine spiral lines; anterior canal and anterior side of aperture broken; the posterior canal is continued as in ''Rimella fissurella'' along a ridge of callus to the tip of the spire."
Changed lines 12-13 from:
'''Stratum typicum''': Chira Formation, Eocene marine shale/ash
to:
'''Stratum typicum''': Chira Formation, Upper Eocene marine shale/ash
July 07, 2012, at 11:05 PM by Ulrich Wieneke -
Added lines 1-19:
Stromboidea
*[[Rimellidae]]
**[[''Rimella'']]
***'''''Rimella peruviana'' Olsson, 1931'''
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'''Original Description''' of ''Rimella peruviana'' by Olsson, 1931, p. [[189->http://biodiversitylibrary.org/page/32443986]]:
*"Shell of medium size, a spire of moderate length and a sculpture of coarse riblets and finer spirals; nucleus unknown; post-nuclear whorls 4+, the spire-whorls fairly large and about one-half the length of the whole shell; rib-like varices are present on some of the spire-whorls and roughly spaced about 120 degrees apart; on the last whorl, a varical rib is present, not quite opposite the outer lip so that the ventral side of the shell appears slightly depressed and the dorsal side convex to slightly humped; sculpture consists of even, linear riblets which number about 21 on the last turn; the spaces between the riblets are wider, concave and marked with fine spiral lines; anterior canal and anterior side of aperture broken; the posterior canal is continued as in Rimella fissurella along a ridge of callus to the tip of the spire."

'''Locus typicus''': Casa Saman, Chira Valley, Peru

'''Stratum typicum''': Chira Formation, Eocene marine shale/ash

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'''References'''
*A. A. Olsson. 1931. Contributions to the Tertiary Paleontology of Northern Peru: Part 4, The Peruvian Oligocene. Bulletins of American Paleontology 17(63), 100-

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(:tags Eocene, Rimellidae, Rimella, Peru :)
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