. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. Ammonoids of the Late Scythian (Lower Triassic) • Kiimmel 515 30 25 20 15 10 5. 0 15 20 30 35 DIAMETER Figure 44. Variation in whorl width (W) and umbilical diameter (U) of Hellenltes praemoturus (Arthaber), from the Sub- co/umbites fauna of Albania and Chios. The data on this graph are from Table 48. types. The measurements are plotted on Figure 44. One of the specimens from a SuhcoJum- bites horizon in Kwangsi, China, that Chao (1959: pi. 41, figs. 3, 4) assigned to H. cf. pracmaiurus has radial ribs and should be a
. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. Ammonoids of the Late Scythian (Lower Triassic) • Kiimmel 515 30 25 20 15 10 5. 0 15 20 30 35 DIAMETER Figure 44. Variation in whorl width (W) and umbilical diameter (U) of Hellenltes praemoturus (Arthaber), from the Sub- co/umbites fauna of Albania and Chios. The data on this graph are from Table 48. types. The measurements are plotted on Figure 44. One of the specimens from a SuhcoJum- bites horizon in Kwangsi, China, that Chao (1959: pi. 41, figs. 3, 4) assigned to H. cf. pracmaiurus has radial ribs and should be assigned to H. radiatus. The specimen is poorly preserved and lacks a suture, but the pattern of ornamentation, etc., is so dis- tinctive that this conclusion seems justified. The Tobin Formation of Nevada has yielded one specimen, 18 mm in diameter, that appears to be identical to the other representatives of this species. No suture is preserved, but the degree of involution, ornamentation, etc., are identical. The species of Hellenites from Chios and Kwangsi are from Subcoliimhites faunas. There are two older species which need to be attached to this genus. These are H. idahoense (Smith, 1932: 81, pi. 49, figs. 13-19) from the Coliimbitcs fauna of south- eastern Idaho, and H. inopinatus Kipari- sova (1958a) from the Primorye Region at a horizon equivalent to the Cohimbites Zone of Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Harvard University. Museum of Comparative Zoology. Cambridge, Mass. : The Museum
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