Table 1. Classification and general features of Oscillibacter valericigenes Sjm18-20^T.

MIGS ID	Property	Term	Evidence codea
		Domain Bacteria	TAS [9]
		Phylum Firmicutes	TAS [10-12]
		Class Clostridia	TAS [13,14]
	Current classification	Order Clostridiales	TAS [15,16]
		Family Oscillospiraceae	NAS [15,17]
		Genus Oscillibacter	TAS [18]
		Species Oscillibacter valericigenes	TAS [1]
		Type strain Sjm18-20	TAS [1]
	Gram stain	negative	TAS [1]
	Cell shape	straight or slightly curved rods	TAS [1]
	Motility	oscillatory motility by peritrichous flagella	TAS [1]
	Sporulation	non-sporulating	TAS [1]
	Temperature range	15-35°C	TAS [1]
	Optimum temperature	30°C	TAS [1]
	Carbon source	yeast extract, polypeptone	TAS [1]
	Energy source	heterotrophic	TAS [1]
	Terminal electron receptor
MIGS-6	Habitat	alimentary canal of Japanese corbicula clam (Corbicula japonica)	TAS [1]
MIGS-6.3	Salinity	0-4% NaCl (no growth in 6%)	TAS [1]
MIGS-22	Oxygen	strictly anaerobic	TAS [1]
MIGS-15	Biotic relationship	free-living	NAS
MIGS-14	Pathogenicity	none	NAS
MIGS-4	Geographic location	sea coast in Shimane Pref., Japan	TAS [1]
MIGS-5	Sample collection time	November 10, 2004	NAS
MIGS-4.1	Latitude
MIGS-4.2	Longitude	NAS
MIGS-4.3	Depth	NAS
MIGS-4.4	Altitude	NAS

a) Evidence codes - 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 [19].