MUSSELp

MUSSELpdb

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Taxonomy

all genera

Unionidae

Margaritiferidae

Hyriidae

Etheriidae

Mycetopodidae

Iridinidae


Species & Genus Richness by
Taxonomy

Geography

Summary

North America

Central America

South America

Afrotropics

North Eurasia

East Asia

Australasia


Species Richness & Endemism by
Geography

Data last updated
Thu 18 Dec 2025

Publication Yokoyama (1932): summary

Full Citation

Yokoyama, M. 1932. Tertiary Mollusca from the Coalfield of Uryu, Ishikari. Jour. Fac. Sci., Univ. Tokyo 3(6): 221-247. Available electronically.

Attributed Nominal Species

Margaritifera perdahurica Yokoyama, 1932

Yokoyama, 1932. Jour. Fac. Sci., Univ. Tokyo 3(6): 244, pt. 6, pl. 4, fig. 2.

Nodularia pisciformis Yokoyama, 1932 = Lanceolaria pisciformis

Yokoyama, 1932. Jour. Fac. Sci., Univ. Tokyo 3(6): 243, pt., 6, pl. 3, figs. 1-2.

Anodonta suavis Yokoyama, 1932

Yokoyama, 1932. Jour. Fac. Sci., Univ. Tokyo 3(6): 244, pt. 6, pl. 4, fig. 1.

Nodularia subjapanensis Yokoyama, 1932

Yokoyama, 1932. Jour. Fac. Sci., Univ. Tokyo 3(6): 242, pt. 6, pl. 4, fig. 3.
 
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