Table 1. Modern reference microbiome datasets.

Metagenome source	Food production	N	Analysis	Source
Homo sapiens, USA	WHU	36	microbiome	The Human Microbiome Project Consortium (2012)
Homo sapiens, India (Bhopal and Kerala)	WHU and NWHR	19	microbiome	Dhakan et al. (2019)
Homo sapiens, Fiji (agrarian villages)	NWHR	20	microbiome	Brito et al. (2019)
Homo sapiens, Madagascar	NWHR	110	microbiome	Pasolli et al. (2019)
Homo sapiens, Brazil (Yanomami)	NWHR	3	microbiome	Pasolli et al. (2019)
Homo sapiens, Peru (Tunapuco)	NWHR	12	microbiome	Obregon-Tito et al. (2015)
Homo sapiens, Tanzania (Hadza)	NWHR	38	microbiome	Rampelli et al. (2015)
Homo sapiens, Peru (Matses)	NWHR	24	microbiome	Obregon-Tito et al. (2015)
Homo sapiens, USA (Boston)	WHU	49	host DNA	This study
Homo sapiens, Burkina Faso	NWHR	69	host DNA	This study
Canis familiaris	–	150	microbiome and host DNA	Coelho et al. (2018)
Soil	–	16	microbiome	Fierer et al. (2012)
Soil	–	2	microbiome	CSIR-Central Institute of Medicinal & Aromatic Plants (2016)
Soil	–	2	microbiome	Orellana et al. (2018)