Assertion: cyanobacteria's structure | /r/CapableOf | fulfill criterion
Facets:
value: for identifying stromatolites
type: PURPOSE
value: according to buchheim
type: OTHER
Source sentences:
text: According to Buchheim (1995), these structures fulfill the criteria for identifying stromatolites: a knobby surface of digitate heads, lamination, internal calcification, and accretion due to the growth of mucilaginous cyanobacteria.