- Yokoyama, M., 1890:
- Versteinerungen aus der japanischen Kreide.
- Palaeontographica, Bd. 36, pp. 159–202, pls. 18–25.
- Yokoyama, M., 1920:
- Fossils from the Miura peninsula and its immediate north.
- Journal of the College of Science, Imperial University of Tokyo, vol. 39, art. 6, pp. 1–193, pls. 1–20.
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- 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.
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- Yokoyama, M., 1923b:
- Tertiary Mollusca from Dainichi in Totomi.
- Journal of the College of Science, Imperial University of Tokyo, vol. 45, art. 2, pp. 1–18, pls. 1–2.
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- Yokoyama, M., 1924a:
- Mollusca from the coral-bed of Awa.
- Journal of the College of Science, Imperial University of Tokyo, vol. 45, art. 1, pp. 1–62 + i–iii, pls. 1–5.
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- Yokoyama, M., 1924b:
- Molluscan remains from the lowest part of the Jo-ban coal-field.
- Journal of the College of Science, Imperial University of Tokyo, vol. 45, art. 3, pp. 1–22, pls. 1–5.
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- Yokoyama, M., 1925a:
- Molluscan remains from the uppermost part of the Jo-ban coal-field.
- Journal of the College of Science, Imperial University of Tokyo, vol. 45, art. 5, pp. 1–34, pls. 1–6.
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- Yokoyama, M., 1925b:
- Molluscan remains from the middle part of the Jo-ban coal-field.
- Journal of the College of Science, Imperial University of Tokyo, vol. 45, art. 7, pp. 1–23, pls. 1–3.
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- Yokoyama, M., 1925c:
- Tertiary Mollusca from Shinano and Echigo.
- Journal of the Faculty of Science, Imperial University of Tokyo, Section 2, vol. 1, pt. 1, pp. 1–23, pls. 1–7.
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- Yokoyama, M., 1925d:
- Mollusca from the Tertiary basin of Chichibu.
- Journal of the Faculty of Science, Imperial University of Tokyo, Section 2, vol. 1, pt. 3, pp. 111–126, pls. 14–15.
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- Yokoyama, M., 1926b:
- Tertiary Mollusca from Shiobara in Shimotsuke.
- Journal of the Faculty of Science, Imperial University of Tokyo, Section 2, vol. 1, pt. 4, pp. 127–138, pls. 16–20.
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- Yokoyama, M., 1926c:
- Molluscan fossils from the Tertiary of Mino.
- Journal of the Faculty of Science, Imperial University of Tokyo, Section 2, vol. 1, pt. 7, pp. 213–227, pl. 28.
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- Yokoyama, M., 1926d:
- Neogene shells from Kozuke and other provinces.
- Journal of the Faculty of Science, Imperial University of Tokyo, Section 2, vol. 1, pt. 7, pp. 229–233, pl. 29.
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- Yokoyama, M., 1926e:
- Tertiary Mollusca from the oil-fields of Embets and Etaibets.
- Journal of the Faculty of Science, Imperial University of Tokyo, Section 2, vol. 1, pt. 7, pp. 235–248, pls. 30–32.
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- Yokoyama, M., 1926f:
- Fossil shells from Sado.
- Journal of the Faculty of Science, Imperial University of Tokyo, Section 2, vol. 1, pt. 8, pp. 249–312, pls. 32–37.
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- Yokoyama, M., 1926g:
- Tertiary Mollusca from southern Totomi.
- Journal of the Faculty of Science, Imperial University of Tokyo, Section 2, vol. 1, pt. 9, pp. 313–364, pls. 38–41.
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- Yokoyama, M., 1926h:
- Tertiary shells from Tosa.
- Journal of the Faculty of Science, Imperial University of Tokyo, Section 2, vol. 1, pt. 9, pp. 365–368, pl. 42.
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- Yokoyama, M., 1926i:
- Fossil shells from the Atsumi peninsula, Mikawa.
- Journal of the Faculty of Science, Imperial University of Tokyo, Section 2, vol. 1, pt. 9, pp. 369–375, pl. 43.
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- Yokoyama, M., 1926j:
- Fossil Mollusca from the oil-fields of Akita.
- Journal of the Faculty of Science, Imperial University of Tokyo, Section 2, vol. 1, pt. 9, pp. 377–389, pls. 44–45.
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- Yokoyama, M., 1927a:
- Mollusca from the upper Musashino of Tokyo and its Suburbs.
- Journal of the Faculty of Science, Imperial University of Tokyo, Section 2, vol. 1, pt. 10, pp. 391–437, pls. 46–50.
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