Subclass Malacostraca refers to a diverse group of crustaceans, which includes shrimps, crabs, lobsters, and crayfish. However, there are several other synonyms for this term that are commonly used by researchers and scientists. These include the Malacostracans, Eumalacostraca, Advanced Crustaceans, Caridoid Crustacea, and Peracarid Crustacea. These terms are used to describe the various physical and anatomical features of these creatures, and their unique characteristics. Understanding the different synonyms for subclass Malacostraca can help you better understand the diversity among crustaceans and their classification within the animal kingdom.