... are recorded in the Hildasay Member section and at the base of sequence T45. These are characterized by the autotropic gonyaulacoid dinocysts C. comatum, I ligospinosum and S, ramosus subsp ramosus . A similar association is seen in the middle neritic sediments of the Lamba Formation at the base...

... gradients are most favourable for autotropic organisms. This may be an analytical artifact because autotrophic organisms commonly colonize electrode surfaces (e.g. Parra & Lin 2009 ). This yields erroneous ORP values relative to the bulk inorganic oxidation potential of the soil slurry...

... rocks, through conversion in metamorphic rocks and in sedimentary environments by the metabolic processes of autotropic bacteria. Such bacteria reduce sulfates derived from saline waters and form framboids a few micrometres in size, as illustrated in Figure 1a and b . The anoxic conditions required...