U.S. Geological Survey Professional Paper, Issue 142U.S. Government Printing Office, 1947 - Geology |
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Page 44
... lirae not subspi- nose --- Chlamys ( Lyropecten ) sayanus Dall . Costals persisting to the ventral margin of the adult ; secondary lirae subspinose . Chlamys ( Lyropecten ) acanikos Gardner , n . sp . Primary costals not longitudinally ...
... lirae not subspi- nose --- Chlamys ( Lyropecten ) sayanus Dall . Costals persisting to the ventral margin of the adult ; secondary lirae subspinose . Chlamys ( Lyropecten ) acanikos Gardner , n . sp . Primary costals not longitudinally ...
Page 45
threaded with four or five coarse lirae , and cut off from the submargin by a deep and narrow byssal notch . The ... lirae . The concentric lamination is sharpest and most elevated toward the outer margins and upon the auri- cles ...
threaded with four or five coarse lirae , and cut off from the submargin by a deep and narrow byssal notch . The ... lirae . The concentric lamination is sharpest and most elevated toward the outer margins and upon the auri- cles ...
Page 119
... lirae which appear on the basal margin as short elevated lines with abrupt terminations , somewhat as in Propeamusium . Altitude 18 , latitude 20 , diameter 10 millimeters . This is a peculiar species and , so far as the lirae are con ...
... lirae which appear on the basal margin as short elevated lines with abrupt terminations , somewhat as in Propeamusium . Altitude 18 , latitude 20 , diameter 10 millimeters . This is a peculiar species and , so far as the lirae are con ...
Page 135
... lirae placed upon the posterior slope of the channel rather than in the bottom of it , the remaining lirae intermediate in position between the ribs ; intercostal areas narrow , A - shaped grooves , microscopically striated by the ...
... lirae placed upon the posterior slope of the channel rather than in the bottom of it , the remaining lirae intermediate in position between the ribs ; intercostal areas narrow , A - shaped grooves , microscopically striated by the ...
Page 193
... lirae in the left valve sharply down - curved along the posterior rib , the alternating lirae tending to dis- appear upon it ; remaining lirae persistent to the dorsal margin , not elevated as in the right valve though cul- minating at ...
... lirae in the left valve sharply down - curved along the posterior rib , the alternating lirae tending to dis- appear upon it ; remaining lirae persistent to the dorsal margin , not elevated as in the right valve though cul- minating at ...
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Common terms and phrases
acute adult altitude angulated anteriorly Apertural view arcuate axial sculpture Baileys Ferry base body whorl Calhoun County canal cardinal Chipola formation Chipola River chipolana conch Conrad constricted costals Dall denticles Dimensions dorsal margin elevated fauna feebly FIGURE flattened front Gardner genus grooves height hinge holotype incremental Inner margin labrum later whorls latitude left valve less Liberty County ligament lirae lirate lunule Maury maximum diameter mile below Baileys millimeters Miocene moderately narrow Oak Grove Oak Grove sand obliquely obscure obtuse Occurrence Okaloosa County Outer lip outline pallial line paratype penult periphery pillar Plate posterior fasciole posterior margin posteriorly prominent protoconch radial ribs right valve sharply Shell Bluff Shell small Shoal River formation sinus slender slightly smooth specimens spiral sculpture spire striated subsp suture Trans Type locality U. S. Nat umbones valve cotype varix view of holotype volutions Wagner Free Inst Walton County