| ID | Locality No. | Sample No. | USGS No. | Quadrangle | | Formation | Age | |
| 2019 | 84AJm651 | 84AJm651 | Mesozoic M7976 | Stepovak Bay | A-6 | Shumagin Formation | Maastrichtian | Select |
| 2020 | 84ACe102 | 84ACe102 | Mesozoic loc. M7977 | Stepovak Bay | A-6 | Shumagin Formation | Maastrichtian | Select |
| 2021 | 84ACe95 | 84ACe95 | Mesozoic loc. M7978 | Stepovak Bay | A-6 | Shumagin Formation | Maastrichtian | Select |
| 9765 | 135-A4-5 | 135-A4-5 | Mesozoic loc. M1207 | Stepovak Bay | A-6 | Shumagin Formation | Jurassic - Cretaceous | Select |
| 9765 | 135-A4-5 | 135-A4-5 | Mesozoic loc. M1207 | Stepovak Bay | A-6 | Unnamed | Jurassic - Cretaceous | Select |
| 9766 | 135-A4-10 | 135-A4-10 | Mesozoic loc. M1208 | Stepovak Bay | A-6 | Shumagin Formation | Jurassic - Cretaceous | Select |
| 9766 | 135-A4-10 | 135-A4-10 | Mesozoic loc. M1208 | Stepovak Bay | A-6 | Unnamed | Jurassic - Cretaceous | Select |
| 6460 | 135-D3-A-19 | 135-D3-A-19 | Cenozoic loc. M1175 | Stepovak Bay | C-5 & C-6 | No Data | Late Oligocene - Early Miocene | Select |
| 2024 | 84ACe127 | 84ACe127 | Mesozoic loc. M7981 | Stepovak Bay | D-3 | Hoodoo Formation | Late Triassic - Cenozoic | Select |
| 2323 | 78ADt144 | 78ADt144 | Paleobot. loc. 11635 | Stepovak Bay | D-3 | Tolstoi Formation | Late Paleocene | Select |
| 4037 | 78AMm26A | 78AMm26A | M7151 | Stepovak Bay | D-3 | Naknek Formation | Kimmeridgian | Select |
| 4038 | 78AMm26B | 78AMm26B | M7152 | Stepovak Bay | D-3 | Naknek Formation | Kimmeridgian | Select |
| 4038 | 78AMm26B | 78AMm26B | M7152 | Stepovak Bay | D-3 | Naknek Formation | Late Jurassic | Select |
| 1546 | 86AWs375D | 86AWs375D | | Stepovak Bay | D-4 | Naknek Formation | Kimmeridgian - Tithonian | Select |
| 1560 | 84ACe129 | 84ACe129 | Cenozoic loc. M8886 | Stepovak Bay | D-4 | Bear Lake Formation | Tertiary | Select |
| 1567 | 84ACe133 | 84ACe133 | Cenozoic loc. M8893 | Stepovak Bay | D-4 | Tolstoi Formation | Tertiary | Select |
| 1568 | 84AGe24 | 84AGe24 | Cenozoic loc. M8899 | Stepovak Bay | D-4 | Stepovak Formation | Tertiary | Select |
| 2023 | 84ADt185 | 84ADt185 | Mesozoic loc. M7980 | Stepovak Bay | D-4 | Naknek Formation | Late Jurassic - Early Cretaceous | Select |
| 2025 | 84AYb595 | 84AYb595 | Mesozoic loc. M7982 | Stepovak Bay | D-4 | Naknek Formation | Tithonian | Select |
| 2027 | 84AWs163 | 84AWs163 | Mesozoic loc. M7983 | Stepovak Bay | D-4 | Naknek Formation | Jurassic | Select |
| 2028 | 84AWs168 | 84AWs168 | Mesozoic loc. M7984 | Stepovak Bay | D-4 | Naknek Formation | Kimmeridgian - Tithonian | Select |
| 2029 | 84AWs160A | 84AWs160A | Mesozoic loc. M7985 | Stepovak Bay | D-4 | Naknek Formation | Jurassic - Cretaceous | Select |