U.S. Geological Survey Professional Paper, Issue 142U.S. Government Printing Office, 1947 - Geology |
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Page 56
... flattened ; resilium rounded - triangular , internal , large , attached in the right valve to a pedunculate chondrophore seated on the anal side of the umbo and extended adorally so as to bring the middle of the resilium in the median ...
... flattened ; resilium rounded - triangular , internal , large , attached in the right valve to a pedunculate chondrophore seated on the anal side of the umbo and extended adorally so as to bring the middle of the resilium in the median ...
Page 83
... flattened ; lunule not depressed directly in front of the umbones_Astarte ( Ashtarotha ) sima Gardner , n . sp . Umbones not flattened ; lunule depressed directly in front of the umbones . Shell normally as high as broad , strongly and ...
... flattened ; lunule not depressed directly in front of the umbones_Astarte ( Ashtarotha ) sima Gardner , n . sp . Umbones not flattened ; lunule depressed directly in front of the umbones . Shell normally as high as broad , strongly and ...
Page 88
... flattened upon their summits . Cardita ( Carditamera ) defuniak Gardner , n . sp . | millimeters ; semidiameter , 11.3 millimeters . variants has been given subspecific rank . An inde- |. Genus CARDITA ( Bruguière ) Lamarck 1798. Cardita ...
... flattened upon their summits . Cardita ( Carditamera ) defuniak Gardner , n . sp . | millimeters ; semidiameter , 11.3 millimeters . variants has been given subspecific rank . An inde- |. Genus CARDITA ( Bruguière ) Lamarck 1798. Cardita ...
Page 132
... flattened , sculptured with more or less elevated costals : Costals not exceeding 25 : Costals normally 18 , very broad , concentrically striated but not imbricated , separated by broad , flattened intercostals___ Cardium ...
... flattened , sculptured with more or less elevated costals : Costals not exceeding 25 : Costals normally 18 , very broad , concentrically striated but not imbricated , separated by broad , flattened intercostals___ Cardium ...
Page 138
... flattened , whereas the 16 or 18 costae upon the disk are prominently elevated and more or less strongly imbricated or striated concen- trically . The posterior portion of the shell is more flattened and angulated in C. druidicum than ...
... flattened , whereas the 16 or 18 costae upon the disk are prominently elevated and more or less strongly imbricated or striated concen- trically . The posterior portion of the shell is more flattened and angulated in C. druidicum than ...
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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