Praechlamys mojsisovicsi (Kobayashi & Ichikawa, 1949)
KOBAYASHI, T. & K. ICHIKAWA. 1949. Tosapecten, gen. nov. and other Upper Triassic Pectinidae from the Sakawa basin in Shikoku, Japan. Japanese Journal of Geology and Geography, 21 (1-4): 163-176, pI. 5. [p. 165, pl. 5, figs. 1-5]
1949 Chlamys mojsisovicsi Kobayashi & Ichikawa, 1949
1954 Pecten (Chlamys) similis Kiparisova in Kiparisova & Krishtofovich, 1954
1954 Pecten (Chlamys) similis Kiparisova in Kiparisova & Krishtofovich, 1954
«1949. Chlamys mojsisovicsi, pp. 155-166, pl. 5, figs. 1-5.
Observation: – General characters of the specimens well agree with the type species from Sakawa, though their costae, 60 or so in number, are fewer than those of the holotype, which amounts to more than 70 in number. On the left valve secondary costae are inserted between the primaries at various distances from the umbo and regularly alternate with them; on the right valve radial ribs increase in number at first by insertion of secondaries, later by insertion and bifurcation. On the byssal ear two or three radial sulci are present. The small trigonal resilifer which could not be found in Sadawa's specimen can be rarely observed (PI. IX, Fig. 5).
Occurrence: – Middle and upper part of N3 bed. Nabae (Loc, No. N-211-216), Nishimirsumatsu (N-201), Hirubatake (N-131), (Reg. No. JM 10015-10020).» NAKAZAWA, K. 1952. A study on the pelecypod-fauna of the Upper Triassic Nabae group in the northern part of Kyoto Prefecture, Japan. Part 1. Pectinids and limids. Memoirs of the College of Sience, University of Kyoto [Series B - Geology and Mineralogy], 20 (2): 95-106, pls. 7-10. [p. 102]
|
Chlamys mojsisovicsi Kobayashi and Ichikawa; K. Nakazawa, 1952, A study on the pelecypod-fauna of the Upper Triassic Nabae group in the northern part of Kyoto Prefecture, Japan. Part 1. Pectinids and limids, plate 9, figures 3-5.
|