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Dactylioceras ( Dactylioceras ) helianthoides Yokoyama

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Citation
1975.

Dactylioceras (Dactylioceras) helianthoides Yokoyama Lectotype

Hirano, H. 1975b pl. J-12, fig. 3

1971.

Dactylioceras (Dactylioceras) helianthoides Yokoyama Lectotype

Hirano, H. 1971 p. 104, pl. 14, fig. 9

1904.

Dactylioceras helianthoides Yokoyama Lectotype

Yokoyama, M. 1904b p. 16, pl. 4, fig. 6

Condition: Present
Taxonomy:Mollusca: Cephalopoda:
Geologic Time:Mesozoic:
Reference
Hirano, H., 1971: Biostratigraphic study of the Jurassic Toyora group. Part 1. Memoirs of the Faculty of Science, Kyushu University, Series D, vol. 21, no. 1, pp. 93–128, pls. 14–20. (Reference No. 0047)
Hirano, H., 1975b: Ammonoid fossils of Japan, 5 (Jurassic ammonites, 11 — Toyora group, 5). Atlas of Japanese fossils, no. 48-305, 4 pp., pl. J-12. Tsukiji Shokan Publishing Co., Ltd., Tokyo. (in Japanese) (Reference No. 0525)
Yokoyama, M., 1904b: Jurassic ammonites from Echizen and Nagato. Journal of the College of Science, Imperial University of Tokyo, vol. 19, art. 20, pp. 1–17, pls. 1–4. (Reference No. 0331)
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Yokoyama, M., 1904b:
(Reference No. 0331)
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