Description of Candidatus Mediterraneibacter stercoravium sp. nov.

Candidatus Mediterraneibacter stercoravium (ster.cor.a’vi.um. L. neut. n. stercus dung; L. fem. n. avis bird; N.L. gen. n. stercoravium of bird faeces)

A bacterial species identified by metagenomic analyses. This species includes all bacteria with genomes that show ≥95% average nucleotide identity (ANI) to the type genome, which has been assigned the MAG ID CHK196-3914 and which is available via NCBI BioSample SAMN15816603. The GC content of the type genome is 48.72% and the genome length is 2.5 Mbp.

Description of Candidatus Mediterraneibacter stercorigallinarum sp. nov.

Candidatus Mediterraneibacter stercorigallinarum (ster.co.ri.gal.li.na’rum. L. neut. n. stercus dung; L. fem. n. gallina hen; N.L. gen. n. stercorigallinarum of hen faeces)

A bacterial species identified by metagenomic analyses. This species includes all bacteria with genomes that show ≥95% average nucleotide identity (ANI) to the type genome, which has been assigned the MAG ID ChiGjej1B1-13045 and which is available via NCBI BioSample SAMN15816697. The GC content of the type genome is 50.04% and the genome length is 2.3 Mbp.

Description of Candidatus Mediterraneibacter stercoripullorum sp. nov.

Candidatus Mediterraneibacter stercoripullorum (ster.co.ri.pul.lo’rum. L. neut. n. stercus dung; L. masc. n. pullus a young chicken; N.L. gen. n. stercoripullorum of the faceces of young chickens)

A bacterial species identified by metagenomic analyses. This species includes all bacteria with genomes that show ≥95% average nucleotide identity (ANI) to the type genome, which has been assigned the MAG ID CHK195-1396 and which is available via NCBI BioSample SAMN15816610. The GC content of the type genome is 48.12% and the genome length is 3.2 Mbp.

Description of Candidatus Mediterraneibacter surreyensis sp. nov.

Candidatus Mediterraneibacter surreyensis (sur.rey.en’sis. N.L. masc. adj. surreyensis pertaining to the English county of Surrey where the samples in the study were collected)

A bacterial species identified by metagenomic analyses. This species includes all bacteria with genomes that show ≥95% average nucleotide identity (ANI) to the type genome, which has been assigned the MAG ID CHK177-12742 and which is available via NCBI BioSample SAMN15816593. The GC content of the type genome is 46.80% and the genome length is 2.9 Mbp.

Description of Candidatus Mediterraneibacter tabaqchaliae sp. nov.

Candidatus Mediterraneibacter tabaqchaliae (ta.baq.cha’li.ae. N.L. fem. gen. n. tabaqchaliae named in honour of British microbiologist Soad Tabaqchali)

A bacterial species identified by metagenomic analyses. This species includes all bacteria with genomes that show ≥95% average nucleotide identity (ANI) to the type genome, which has been assigned the MAG ID ChiGjej3B3-11674 and which is available via NCBI BioSample SAMN15816791. The GC content of the type genome is 51.91% and the genome length is 2.7 Mbp.

Description of Candidatus Mediterraneibacter vanvlietii sp. nov.

Candidatus Mediterraneibacter vanvlietii (van.vliet’i.i. N.L. gen. n. vanvlietii named in honour of Dutch microbiologist Arnoud van Vliet)

A bacterial species identified by metagenomic analyses. This species includes all bacteria with genomes that show ≥95% average nucleotide identity (ANI) to the type genome, which has been assigned the MAG ID ChiBcec1-362 and which is available via NCBI BioSample SAMN15816623. The GC content of the type genome is 48.47% and the genome length is 3.0 Mbp.

Description of Candidatus Megamonas gallistercoris sp. nov.

Candidatus Megamonas gallistercoris (gal.li.ster’co.ris. L. masc. n. gallus chicken; L. neut. n. stercus dung; N.L. gen. n. gallistercoris of chicken faeces)

A bacterial species identified by metagenomic analyses. This species includes all bacteria with genomes that show ≥95% average nucleotide identity (ANI) to the type genome, which has been assigned the MAG ID ChiGjej6B6-7947 and which is available via NCBI BioSample SAMN15816859. This is a new name for the alphanumeric GTDB species sp900554895. The GC content of the type genome is 40.34% and the genome length is 2.2 Mbp.

Description of Candidatus Merdenecus gen. nov.

Candidatus Merdenecus (Merd.en.e’cus. L. fem. n. merda dung; Gr. masc. enoikos inhabitant; N.L. masc. n. Merdenecus a microbe associated with faeces)

A bacterial genus identified by metagenomic analyses. The genus includes all bacteria with genomes that show ≥60% average amino acid identity (AAI) to the type genome from the type species Candidatus Merdenecus merdavium. This is a name for the alphanumeric GTDB genus MCWD5. This genus has been assigned by GTDB-Tk v1.3.0 working on GTDB Release 05-RS95 (Chaumeil et al., 2019; Parks et al., 2020) to the order Lachnospirales and to the family Lachnospiraceae.