Acetonema [SEP] parent taxon
Acetonema
Acetonema is a genus of bacteria in the family Veillonellaceae. It is H-oxidizing CO-reducing acetogenic strictly anaerobic endospore-forming Gram-negative motile rod-shaped, isolated from gut contents of the wood-feeding termite "Pterotermes occidentis". Cells are catalase positive, oxidase negative, and have 51.5 mol percent G + C in their DNA. Optimum conditions for growth on H + CO are at 30-33 degrees C and pH (initial) 7.8. "Acetonema longum" is the sole
Taxon in disguise
In bacteriology, a taxon in disguise is a species, genus or higher unit of biological classification whose evolutionary history reveals has evolved from another unit of similar or lower rank, making the parent unit paraphyletic. This happens when rapid evolution makes a new species appear radically different from the ancestral group, so that it is not (initially) recognised as belonging to the parent phylogenetic group, leaving the latter an evolutionary grade.
While the term is from bacteriology, parallel examples are found throughout the tree of