The reclassification of Butyrivibrio crossotus Moore et al . 1976 (Approved Lists 1980) as Eshraghiella crossota gen. nov., comb. nov. is proposed within the family Lachnospiraceae . This reclassification is based on differences revealed through the analysis of 16S rRNA, groEL , recA , and rpoB genes, as well as genome sequences, distinguishing it from other Butyrivibrio species. Comparative analysis showed that B. crossotus exhibited digital DNA-DNA hybridization (dDDH) values of 19.40-27.20% and average nucleotide identities based on blast (ANIb) values of 67.06-67.64% with other Butyrivibrio species. These values are significantly below the species delineation thresholds (dDDH, 70%; ANIb, 95-96%), justifying the proposed reclassification. Additionally, the results of the average amino acid identity (AAI) analysis indicated that this species shares 59.22-60.17% AAI with the other species of the genus Butyrivibrio , which is below the AAI threshold (65%) for a genus boundary. In addition, biochemical and morphological characteristics also support the proposal that this species is different from other species of the genus Butyrivibrio . The type strain is ATCC 29175 T (DSM 2876 T =T9-40A T ).