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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