Leptostraca

plural noun
Lep·​tos·​tra·​ca | \lepˈtästrəkə\

Definition of Leptostraca 

: a division of Malacostraca including the Phyllocarida, the Nebaliacea, and various fossil forms that are regarded as intermediate between the typical malacostracans and the lower crustaceans although classed among the former — see nebalia

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Other Words from Leptostraca

leptostracan \ (ˈ)⸗¦⸗⸗kən \ adjective or noun
leptostracous \ (ˈ)⸗¦⸗⸗kəs \ adjective

History and Etymology for Leptostraca

New Latin, from lept- + -ostraca

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