| Caproiciproducens reaktori | Type Strain | ATCC® TSD-283™ | April 28, 2023 | 3.9 Mb | | |
| Clostridium acetobutylicum | Type Strain | ATCC® 824™ | February 26, 2020 | 4.1 Mb | | |
| Clostridium beijerinckii | MSA Component | ATCC® 35702™ | May 1, 2020 | 6.0 Mb | | |
| Clostridium beijerinckii | | ATCC® 8260™ | September 5, 2023 | 6.5 Mb | | |
| Clostridium ljungdahlii | Type Strain | ATCC® BAA-3217™ | June 1, 2023 | 4.6 Mb | | |
| Clostridium pasteurianum | Type Strain | ATCC® 6013™ | February 26, 2020 | 4.4 Mb | | |
| Clostridium perfringens | | ATCC® 3624™ | June 1, 2023 | 3.2 Mb | | |
| Clostridium perfringens | | ATCC® 12916™ | September 2, 2021 | 3.0 Mb | | |
| Clostridium perfringens | | ATCC® 10543™ | July 1, 2021 | 3.4 Mb | | |
| Clostridium perfringens | | ATCC® 17874™ | March 1, 2021 | 3.0 Mb | | |
| Clostridium perfringens | | ATCC® 3626™ | December 23, 2021 | 3.8 Mb | | |
| Clostridium perfringens | Type Strain | ATCC® 13124™ | June 14, 2019 | 3.3 Mb | | |
| Clostridium saccharoperbutylacetonicum | Type Strain | ATCC® 27021™ | November 30, 2021 | 6.7 Mb | | |
| Clostridium septicum | Type Strain | ATCC® 12464™ | December 23, 2021 | 3.4 Mb | | |
| Clostridium sp. | Type Strain | ATCC® TSD-22™ | April 2, 2022 | 4.7 Mb | | |
| Clostridium sp. | | ATCC® 25772™ | December 15, 2021 | 4.1 Mb | | |
| Clostridium sp. | Type Strain | ATCC® TSD-24™ | April 2, 2022 | 4.7 Mb | | |
| Clostridium sp. | Type Strain | ATCC® TSD-31™ | April 1, 2022 | 5.2 Mb | | |
| Clostridium sporogenes | | ATCC® 7955™ | September 29, 2020 | 4.0 Mb | | |
| Clostridium sporogenes | Type Strain | ATCC® 3584™ | February 26, 2020 | 4.1 Mb | | |
| Clostridium sporogenes | | ATCC® 15579™ | April 2, 2022 | 4.1 Mb | | |
| Clostridium sporogenes | | ATCC® 11437™ | August 3, 2020 | 4.1 Mb | | |
| Clostridium sporogenes | | ATCC® 9690™ | March 1, 2021 | 4.1 Mb | | |
| Clostridium sporogenes | | ATCC® 19404™ | February 26, 2020 | 4.1 Mb | | |
| Clostridium tertium | Type Strain | ATCC® 14573™ | March 1, 2021 | 3.9 Mb | | |
| Clostridium tetani | Type Strain | ATCC® 19406™ | December 15, 2021 | 2.8 Mb | | |
| Clostridium tyrobutyricum | Type Strain | ATCC® 25755™ | November 30, 2021 | 3.1 Mb | | |