Conserved name
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A conserved name or nomen conservandum is a scientific name that has specific nomenclatural protection in that the name is retained, even though it violates one or more rules that would otherwise prev
The name for this yeast, Candida albicans, is a nomen conservandum.
Nomen oblitum
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In zoological nomenclature, a nomen oblitum is a scientific name that has been declared to be obsolete in favor of a "protected" name.
Triakis semifasciata (formerly known as Mustelus felis) at the Monterey Bay Aquarium