based on LPSN 2021 Metasolibacillus is a genus of gram-positive rod-shaped bacteria in the family Caryophanaceae from the order Caryophanales.

Instead of branching with species from their respective genus, these four species formed a monophyletic branch in various phylogenetic trees constructed based on conserved genome sequences, indicating their phylogenetic relatedness.

[1] The family Caryophanaceae encompassed many branching anomalies such as this one, partially due to the reliance on 16S rRNA sequences as a method for classification, which is known to have low resolution power and give differing results depending on the algorithm used.

[3] In 2020, a comparative genomic study emended the family, resulting in the establishment of three new genera, including Metasolibacillus.

[1] The name Metasolibacillus is derived from the Greek adjective meta, translating into "besides" and the Latin term Solibacillus, referring the genus name.