A living fossil is a term for an extant taxon that phenotypically resembles related species known only from the fossil record, though scientifically the term is deprecated and avoided. To be considered a living fossil, the fossil species must be old relative to the time of origin of the extant clade.
A living fossil is a term for an extant taxon that phenotypically resembles related species known only from the fossil record, though scientifically the term is deprecated and avoided. To be considered a living fossil, the fossil species must be old relative to the time of origin of the extant clade.
Source: Wikipedia "Living fossil" · CC BY-SA 4.0
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