Edmondia sp.
1967a. Edmondia sp.: Hayasaka, p. 380, text-figs. 2a, b, 3a, b, 4a-c.
Age and distribution. —Middle Permian (Artinskian or Kazanian). Lower part of the Kano kura Formation in Kesennuma area of Miyagi Prefecture.

Edmondia sp.
1968. Edmondia sp. a: Nakazawa and Newell, p. 39, pl. 1, figs. 6a, b.
Age and distribution. —Upper Permian (stage unknown). Gujo Formation in Oe area of Kyoto Prefecture.

Edmondia sp.
1968. Edmondia sp. b: Nakazawa and Newell, p. 40, pl. 11, fig. 7.
Age and distribution. —Upper Permian (stage unknown). Gujo Formation in Oe area of Kyoto Prefecture and (?) upper part of the Maizuru Group in Ayabe area of the same prefecture.

Edmondia sp.
1968. Edmondia sp. c: Nakazawa and Newell, p. 41, pl. 1, figs. 7, 8.
Age and distribution. —Middle Permian (Kazanian). Tenjinnoki Formation of the Maiya Group in Towa area of Miyagi Prefecture.

Edmondia? sp.
1951. Edmondiai a sp.: Ichikawa, p. 324, pl. 1, fig. 9.
Age and distribution. —Upper Permian (stage unknown). Katsura Formation in Sakawa area of Kochi Prefecture.

Edmondia? sp.
1951. Ed-mondial b sp.: Ichikawa, p. 324, pl. 1, fig. 8.
Age and distribution. —Upper Permian (stage unknown). Katsura Formation in Sakawa area of Kochi Prefecture.

Sanguinolites? bisectus Hayasaka
1925. Sanguinolites bisectus Hayasaka, p. 13, pl. 8, fig. 10.
Type. —Holotype by monotypy (IGPS no. 22414, Hayasaka, 1925, pl. 8, fig. 10) from the Lower Carboniferous at Hikoroichi, Ofunato City, Iwate Prefecture.
Age and distribution. —Lower Carboniferous (Visean or thereabout). Known only from the type locality.

Sanguinolites kamiyassensis Nakazawa and Newell
1968. Sanguinolites kamiyassensis Nakazawa and Newell, p. 42, pl, 11, figs. 3, 4.
Type. —Holotype (UK, not registered, Nakazawa and Newell, 1968, pl. 11, fig. 3) from the Shigejizawa member of the Kanokura Formation at Kamiyasse, Kesennuma City, Miyagi Prefecture.
Age and distribution. —Middle Permian (Kazanian). Known only from the type locality.

Sanguinolites sp.
1968. Sanguinolites sp.: Nakazawa and Newell, p. 42.
Age and distribution. —Middle Permian (Kazanian). Shigejizawa member of the Kanokura Formation in Kesennuma area of Miyagi Prefecture.

Sanguinolites? sp.
1968. Sangninolitesi sp.: Nakazawa and Newell, p. 43, pl. 1, fig. 11.
Age and distribution. —Middle Permian (Kazanian). Tenjinnoki Formation of the Maiya Group in Towa area of Miyagi Prefecture.

Alula elegantissima (Hayasaka) [Pl. 10, Fig. 10]
1925. Solenomorpha elegantissima Hayasaka, p. 21, pl. 9, figs. 1, 1a, 2, 2a, 3-7.-1952. Solenomorpha elegantissima Hayasaka: Shikama, p. 98, pl. 11, fig. 9 [reproduction of an original figure].-1953. Solenomorpha elegantissima Hysk.: Hayasaka and Hayasaka, p. 39.-1970. Solenomorpha elegantissima Hayasaka: Shikama, p. 116, pl. 35, fig. 20 [reproduction of an original figure].
Type. —Syntypes (IGPS no. 8203, at least seven specimens) from the "Kuro zone" (i.e., Yabeina globosa zone) of the Akasaka Limestone at Kinshozan, Akasaka-cho, Puwa-gun, Gifu Prefecture.
Age and distribution. —Middle Permian (Kazanian). Known only from the type locality.

Explanation of Plate 10 Fig. 1. Annuliconcha kitakamiensis Murata. Holotype (IGPS no. 22389). Left external mould, × 1.5. Loc. Imo, Iwate Pref. (Middle Permian, Kanokura Formation). Fig. 2. Aviculopecten hataii Murata. Holotype (IGPS no. 85732). Rubber cast from left external mould, × 1.5. Loc. Toyazawa, Miyagi Pref. (Middle Permian, Kanokura Formation). Fig. 3. Acanthopecten spinosus Hayasaka. Lectotype (IGPS no. 22378). Rubber cast from left external mould, × 1.5. Loc. Imo, Iwate Pref. (Middle Permian, Kanokura Formation). Fig. 4. Acanthopecten onukii Murata. Holotype (IGPS no. 85745). Rubber cast from left external mould, × 1.5. Loc. Shigejizawa, Miyagi Pref. (Middle Permian, Kanokura Formation). Fig. 5. Enchondria? kesenensis (Hayasaka). Holotype (IGPS no. 22383). Right internal mould, × 1.5. Loc. Imo, Iwate Pref. (Middle Permian, Kanokura Formation). Fig. 6. Guizhoupecten miyamoriensis (Murata). Holotype (IGPS no. 85733). Rubber cast from left external mould, × 1.5. Loc. Mt. Hiryuyama, Iwate Pref. (Middle Permian, Hiryuyama Formation). Fig. 7. Actinodonfophora katsurensis Ichikawa; type-species of genus Actinodontophora. Holotype (UMUT PM5306). Rubber cast from left internal mould, × 1.5. Loc. Katsura, Kochi Pref. (Upper Permian, Katsura Formation). Fig. 8. Schizodus tobai (Hayasaka). Syntype (IGPS no. 8406). Right internal mould, × 1.5. Loc. Imo, Iwate Pref. (Middle Permian, Kanokura Formation). Fig. 9. Schizodus japonicus (Hayasaka). Lectotype (IGPS no. 22422). Right valve, × 1.2. Loc. Kinshozan, Gifu Pref. (Middle Permian, Akasaka Limestone). Fig. 10. Alula elegantissima (Hayasaka). Syntype (IGPS no. 8203). Left valve, × 0.55. Loc. Kinshozan, Gifu Pref. (Middle Permian, Akasaka Limestone).

Pyramus planus Nakazawa and Newell
1968. Pyramus planus Nakazawa and Newell, p. 45, pl. 1, figs. 5, 9, 10.
Type. —Holotype (UK, not registered, Nakazawa and Newell, 1968, pl. 1, fig. 5) from the Gujo Formation at Gujo, Oe-cho, Kasa-gun, Kyoto Prefecture.
Age and distribution. —Upper Permian (stage unknown). Known only from the type locality.

Wilkingia sp.
1967b. Allorisma sp.: Hayasaka, p. 517, text-figs, 1a-d.
Age and distribution. —Middle Permian (Artinsldan or Kazanian). Lower part of the Kanokura Formation in Kesennuma area of Miyagi Prefecture.

Wilkingia sp.
1968. Wilkingia sp.: Nakazawa and Newell, p. 44, pl. 10, fig. 6.
Age and distribution. —Middle Permian (Artinskian or Kazanian). Lower? part of the Kanokura Formation in Yahagi area of Iwate Prefecture.

Chaenomya (Vacunella) rostrata Nakazawa and Newell
1968. Chaenomya (Vacunella) rostrata Nakazawa and Newell, p. 102, pl. 10, fig. 7.
Type. —Lectotype here designated (UK, not registered, Nakazawa and Newell, pl. 10, fig. 7) from the Gujo Formation at Gujo, Oe-cho, Kasa-gun, Kyoto Prefecture.
Age and distribution. —Upper Permian (stage unknown). Known only from the type locality.

Lima? sp.
1967. Lima cf. retifera Shumard: Yanagisawa, p. 97, pl. 2, fig. 9.
Age and distribution. —Middle Permian (stage unknown). Kashiwadaira Formation of the Takakurayama Group in Yotsukura area of Fukushima Prefecture.

Conocardium? sp.
1967. Conocardium kansuensis Chao [sic]: Yanagisawa, p. 94, pl. 3, fig. 9.
Age and distribution. —Middle Permian (stage unknown). Kashiwadaira Formation of the Takakurayama Group in Yotsukura area of Fukushima Prefecture.

Posidonia? sp.
1924b. Posidoniella cfr. pyriformis Hind: Hayasaka, p. 57, pl. 7, fig. 10 (erroneously written as fig. 9 in text and explanation).
Age and distribution. —Carboniferous (stage unknown). Omi Limestone in Omi area of Niigata Prefecture.