Leptostraca Malacostraca Crustacea Arthropoda

Leptostracans, or phyllocaridans, are small, benthic marine crustaceans and there are about 20 species. Recent leptostracans are considered to be relics of a larger Cambrian taxon. They have an enormous bivalve carapace which encloses the thorax and most of the abdomen, and the compound eyes are stalked.

• Nebalia pugettensis - Exercise from Invertebrate Anatomy OnLine covering the systematics leptostraca and external anatomy of this crustacean.

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