Chlamys kinoshitai (Kubota, 1950)
KUBOTA, K. 1950. Illustrated Cenozoic fossils 9. Fossil Pectinidae of Setana Series. Cenozoic Research, 6: 94-100, pls. 8, 9. [in Japanese] [p. 16]
1934 Chlamys islandica var. kinoshitai Kubota, 1950
«Kubota only suggested this name and did not provide a figure or a description. Kubota's Rame is based on Kinoshita and Isahaya's erythrocomata with rather broad ribs which do not make fascicular bundles, and he contrasted it with his Ch. islandica var. osugii.
Masuda (1962) combined this form with his Ch. hanaishiensis. According to the International Code of Zoological Nomenclature, Kubota's name meets all the requirements of the Code. Shell moderate in thickness and convexity, higher than lofig, apical angle 96°-105°. Right valve with about 28-36, distinct, roundly flat-topped, finely scaled radial ribs, finely scaled intercalary threads, conceiitric growth lines; radial rlbs somewhat broader thaii their iflterspaces, subequal or sometimes unequal to each other, usually divide into two, subequal riblets by a shallow longitudinal furrow near ventral margin, or sometimes remain undivided; autricle moderate in size, anterior larger than posterior, with conspicuous byssal notch and moderate byssal area. Left valve with fiatly round-topped, finely imbricated radial ribs, finely scaled intercalary threads, concentric growth lines, radial ribs narrower than their interspaces, sometimes unequal to each other, usually divide into two or three or rarely more riblets towards ventral margin. Comparisons: This species seems to be related Ch. pseudislandica. But it is distinguishable from in having subequal and unequal ribs which are divided by a shallow longitudinal furrow near ventral inargin. Repository: Holotype, Hokkaido Fish Experiment Station, Reg. No.?» UOZOMI, S. & M. AKAMATSU. 1975. Pliocene Pectinids from Southwest Hokkaido, Japan -Chlamys Islandicus Group -. Journal of the Faculty of Science, Hokkaido University [Series 4, Geology and Mineralogy], 17 (1): 27-71, pls. 1-12. [p. 43, 44]
|