Table 3. Closest Alchichica microbialite OTUs to sequences of DNA fragments amplified from DGGE bands.

Band	First hit	Identity	Taxonomy	Corresponding OTU
A	Contig_AL67_2_1B_154	84%	Bacteria; Chloroflexi	ChlorofOTU11 (Fig. S5)
B	Contig_AL67_2_1B_105	98%	Bacteria; Chloroflexi	ChlorofOTU10 (Fig. S5)
C	Contig_AL31_2_B_35	100%	Bacteria; Chloroflexi	ChlorofOTU02 (Fig. S5)
D	Contig_AL67_2_1B_187	86%	Bacteria; Chloroflexi	ChlotofOTU01 (Fig. S5)
E	Contig_AL67_2_1B_14	91%	Bacteria; Bacteroidetes	BactOTU10 (Fig. S9)
F	Contig_AQ2_2_1B_199	97%	Bacteria; Bacteroidetes	BactOTU07 (Fig. S9)
G	Contig_AL31_2_1B_35	100%	Bacteria; Chloroflexi	ChlorofOTU02 (Fig. S5)
H	Contig_AL67_2_1B_14	98%	Bacteria; Bacteroidetes	BactOTU10 (Fig. S9)
I	Contig_AQ2_2_1C_40	97%	Bacteria; Cyanobacteria; Chroccocales	CyanoOTU32 ( Fig. 4 )
J	Contig_AL52_1_1C_37	97%	Bacteria, Cyanobacteria, Pleurocapsales	CyanoOTU35 ( Fig. 4 )
K	Contig_AQ1_1_1B_10	99%	Bacteria; Chloroflexi	ChlorofOTU07 (Fig. S5)
L	Contig_AL52_1_1C_07	91%	Bacteria; Cyanobacteria; Prochlorales	CyanoOTU09 ( Fig. 4 )
M	Contig_AL31_2_1B_35	100%	Bacteria; Chloroflexi	ChlorofOTU02 (Fig. S5)
N	Contig_AQ2_2_1B_212	98%	Bacteria; Actinobacteria; Rubrobacteridae	ActinoOTU03 (Fig.S10)

Bands correspond to those labeled in Figure S2.