plural noun
As·​tero·​spon·​dy·​li | \-ˈspändəˌlī\

Definition of Asterospondyli 

in some classifications

: an order of Elasmobranchii comprising forms having asterospondylic vertebrae and including most of the recent sharks and dogfishes

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History and Etymology for Asterospondyli

New Latin, from aster- + -spondyli

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