plural noun
Phyl·lo·spon·dy·li | \ˌfilōˈspändəˌlī\

Definition of Phyllospondyli 

in some especially former classifications

: an order of extinct amphibians with phyllospondylous vertebrae that are now usually regarded as larval labyrinthodonts — compare branchiosaurus

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History and Etymology for Phyllospondyli

New Latin, from phyll- + -spondyli

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