Lepidostei

plural noun
Lep·i·dos·tei | \ˌlepəˈdästēˌī\

Definition of Lepidostei 

in some classifications

: a group or order of ganoid fishes that includes the Lepisosteidae and several related extinct families now usually divided between the orders Cycloganoidei, Halecostomi, and Ginglymodi and that has numerous representatives in the Mesozoic and constitutes the dominant type of fish in the Jurassic

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History and Etymology for Lepidostei

New Latin, from lepid- + -ostei (plural of -osteus)

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