Patinopecten Dall, 1898
DALL, W. H. 1898. Contributions to the Tertiary fauna of Florida. Silex Beds of Tampa and the Pliocene Beds of the Caloosahatchie River. Part IV. I. Prionodesmacea: Nucula to Julia. 2. Teleodesmacea: Teredo to Ervilia. Transactions of the Wagner Free Institute of Science of Philadelphia, 3 (4): viii, 571-947 p., pls. 23-35. [p. 695]
«Section Patinopecten Dall, 1898. Type P. caurinus Gld.
Valves with small ribs, flat on the right valve and sometimes dichotomous; smaller and more rounded on the left valve; concentric sculpture inconspicuous; radial striae absent or obsolete; ears subequal; valves nearly equilateral. To this group belong such fossil species as P. Meekii Conrad and P. expansus Dall.»
WILLIAM HEALEY DALL, 1898
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Pecten (Patinopecten) caurinus Gould; R. Arnold, 1906, The Tertiary and Quaternary pectens of California, plate 38, figures 1, 1a, 1b.
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Patinopecten caurinus (Gould); K. Masuda, 1963, The so-called Patinopecten of Japan, plate 22, figures 1a-1d.
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«In 1898 DALL (p. 695) established Patinopecten as a section of the genus Pecten and gave the following diagnosis: "Valves with small ribs, flat on the right valve and sometimes dichotomous; smaller and more rounded on the left valye; concentric sculpture inconspicuous: radial striae absent or obsolate; ears subequal; valves nearly equilateral".
At that time he designated Pecten caurinus GOULD, a Recent scallop of Northern California, as the type species and included into this section such fossil species as Pecten meekii CONRAD and Pecten expansus DALL. Subsequently ARNOLD (1906) raised Patinopecten to subgeneric ranking and included the following scallops, Pecten caurinus GOULD, Pecten coosensis SHUMARD, Pecten dilleri DALL, Pecten Healeyi ARNOLD, Pecten oweni ARNOLD, Pecten purisimaensis ARNOLD, Pecten propatulus CONRAD and Pecten turneri ARNOLD. Subsequently, GRANT and GALE (1931) gave the following diagnosis to the subgenus Patinopecten. "Shell large, thin, sometimes of a somewhat pearly texture, having a circular outline and very low convexity, valves usually equal, although at times one or the other may become nearly flat; radial sculpture consisting of distinct ribs without minor striation, sometimes with microscopic cross-hatching, ribs of the right valve comparatively broad and squarish, sometimes with a medial sulcus, those of the left valve narrow, often sharp, with intercalaries if the ribs of the right valve are sulcated; hinge line usually short, ears of almost equal length. byssal notch deep in the older species, more shallow in Recent species". At that time they included several fossil or Recent species distributed from Alaska to Oregon into the subgenus Patinopecten. Moreover, they questionably referred the japanese Pecten yamasakii YOKOYAMA and Pecten tryblium YOKOYAMA to Pecten (Patinopecten) healeyi ARNOLD, a Pliocene species of California.» MASUDA, K. 1963. The so-called Patinopecten of Japan. Transactions and Proceedings of the Palaeontological Society of Japan [N. S.], 52: 145-153, pls. 22, 23. [p. 146, 147]
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