Table 1. Classification and general features of T. acidaminovorans strain Su883^T according to the MIGS recommendations [11].

MIGS ID	Property	Term	Evidence code
	Current classification	Domain Bacteria	TAS [12]
		Phylum Synergistetes	TAS [13]
		Class Synergistia	TAS [13]
		Order Synergistales	TAS [13]
		Family Synergistaceae	TAS [13]
		Genus Thermanaerovibrio	TAS [1]
		Species Thermanaerovibrio acidamonovorans	TAS [1]
		Type strain Su883	TAS [1]
	Gram stain	negative	TAS [3]
	Cell shape	curved rods, 0.5-0.6 × 2.5-3.0 µm	TAS [3]
	Motility	motile, lateral flagella	TAS [3]
	Sporulation	non-sporulating	TAS [3]
	Temperature range	40-58°C	TAS [3]
	Optimum temperature	55°C	TAS [3]
	Salinity	no NaCl required for growth, upper tolerance border unknown	TAS [1]
MIGS-22	Oxygen requirement	strictly anaerobic	TAS [3]
	Carbon source	succinate, glucose, fructose, amongst others (see text)	TAS [3]
	Energy source	carbohydrates, amino acids	TAS [3]
MIGS-6	Habitat	granular methanogenic sludge	TAS [3]
MIGS-15	Biotic relationship	free living	NAS
MIGS-14	Pathogenicity	unknown
	Biosafety level	1	TAS [14]
	Isolation	sludge sample taken from an upflow anaerobic sludge bed (UASB) reactor of a sugar refinery	TAS [3]
MIGS-4	Geographic location	Breda, The Netherlands	TAS [3]
MIGS-5	Sample collection time	1992 or before	TAS [3]
MIGS-4.1 MIGS-4.2	Latitude, Longitude	51.589, 4.774	NAS
MIGS-4.3	Depth	not reported
MIGS-4.4	Altitude	not reported

Evidence codes - IDA: Inferred from Direct Assay (first time in publication); TAS: Traceable Author Statement (i.e., a direct report exists in the literature); NAS: Non-traceable Author Statement (i.e., not directly observed for the living, isolated sample, but based on a generally accepted property for the species, or anecdotal evidence). These evidence codes are from the Gene Ontology project [15]. If the evidence code is IDA, then the property should have been directly observed for a living isolate by one of the authors, or an expert mentioned in the acknowledgements.