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UMUT CM 21417

Paleontology Collections

Lyonsiella ( Simplicicordia ) trigonata (Yokoyama, 1922)

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Citation
1973.

Lyonsiella (Simplicicordia) trigonata (Yokoyama, 1922) Lectotype

Oyama, K. 1973 p. 120, pl. 57, fig. 16a, b

1954.

"Thyasira" trigonata Yokoyama, 1922 Lectotype

Taki, I. & Oyama, K. 1954 pl. 29, fig. 11

1922.

Thyasira trigonata Yokoyama, 1922 Syntype

Yokoyama, M. 1922a p. 158, pl. 9, fig. 11

Condition: Present
Taxonomy:Mollusca: Bivalvia: Verticordiidae:
Geologic Time:Cenozoic: Pleistocene:
Horizon:Imba Group:
Locality:Chiba: Ichihara: Shito:
Reference
Oyama, K., 1973: Revision of Matajiro Yokoyama's type Mollusca from the Tertiary and Quaternary of the Kanto area. Palaeontological Society of Japan, Special Papers, no. 17, pp. 1–148, pls. 1–57. (Reference No. 0411)
Taki, I. and Oyama, K., 1954: Matajiro Yokoyama's the Pliocene and later faunas from the Kwanto region in Japan. Palaeontological Society of Japan, Special Papers, no. 2, pp. 1–68, pls. 1–49. (Reference No. 0441)
Yokoyama, M., 1922a: Fossils from the upper Musashino of Kazusa and Shimosa. Journal of the College of Science, Imperial University of Tokyo, vol. 44, art. 1, pp. 1–200 + i–viii, pls. 1–17. (Reference No. 0465)
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UMUT Material Reports: Citation
Ichikawa, T., 1983, no. 9, p. 140. 
Ichikawa, T., 1983, no. 9, p. 208. 
Ichikawa, T., 1983, no. 9, p. 277. 

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Yokoyama, M., 1922a:
(Reference No. 0465)
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UTokyo Repository
Yokoyama, M., 1922a:
(Reference No. 0465)
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