| 化石名 ↓ / 採集地 → | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |
| 蟹田川支流清水股沢 | 広瀬川支流関根股沢 | 広瀬川支流西股沢 | 下小園北東 | 広瀬附近線路切割 | 瀬辺地北方小川平附近（Ⅰ） | 今別川支流和徳沢 | 今別川上流鉄道トンネル附近 | 瀬辺地北方小川平附近（Ⅱ） | |
| Acila sp. | × | ||||||||
| Yoldia notabilis YOKOYAMA | × | ||||||||
| Yoldia sp. | × | ||||||||
| Glycymeris yessoensis (SOWERBY) | × | ||||||||
| Crenella sp. | × | ||||||||
| Swiftopecten swiftii (BERNARDI) | × | × | |||||||
| Chlamys spp. | × | × | |||||||
| Patinopecten yessoensis (JAY) | × | × | × | ||||||
| Ostrea gigas THUNBERG | × | ||||||||
| Venericardia ferruginea (A. ADAMS) | × | ||||||||
| Nemocardium samarangae (MAKIYAMA) | × | ||||||||
| Nomocardium sp. | × | × | × | ||||||
| Serripes laperousii (DESHAYES) | × | ||||||||
| Mactra sp. | × | ||||||||
| Spisula cfr. hemphilli DALL | × | ||||||||
| Macoma cfr. nasuta CONRAD | × | ||||||||
| Macoma tokyoensis MAKIYAMA | × | ||||||||
| Macoma sp. | × | ||||||||
| Hiatella arctica (LINNE) | × | ||||||||
| Panope japonica A. ADAMS | × | ||||||||
| Entodesma sp. | × | ||||||||
| Thracia sp. | × | ||||||||
| Tectonatica janthostoma (DESHAYES) | × | ||||||||
| Tectonatica sp. | × | ||||||||
| Turritella sp. | × | ||||||||
| Buccinidae Gen. sp. indet. | × | ||||||||
| Crepidula sp. | × | ||||||||
| Echinarachnius cfr. laganolithinus NISHIYAMA | × |