In cladistics terms the difference between symplesiomorphy and synapomorphy
is that symplesiomorphy is an ancestral trait shared by two or more taxa while synapomorphy is a derived trait that is shared by two or more taxa of shared ancestry.
symplesiomorphy
English
Noun
(symplesiomorphies)
(cladistics) An ancestral trait shared by two or more taxa.
Related terms
* symplesiomorphic synapomorphy
English
Noun
(synapomorphies)
(cladistics) A derived trait that is shared by two or more taxa of shared ancestry
Antonyms
* (derived trait that is shared) plesiomorphy
Derived terms
* synapomorphic
See also
*autapomorphy