synapomorphy

noun
syn·​ap·​o·​mor·​phy | \ (ˌ)si-ˈna-pə-ˌmȯr-fē \
plural synapomorphies

Definition of synapomorphy

: a character or trait that is shared by two or more taxonomic groups and is derived through evolution from a common ancestral form

First Known Use of synapomorphy

1965, in the meaning defined above

History and Etymology for synapomorphy

International Scientific Vocabulary syn- + apomorphy derived evolutionary trait or feature (from apo- + -morphy)

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The first known use of synapomorphy was in 1965

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