You can search the complete taxonomic tree of the species in the database. Click "Phylum" to get back to to the starting point. The thumbnails show examples of the Class, Order etc.

Phylum	Class	Order	Family	Species
Arthropoda	Malacostraca	Decapoda	Palaemonidae	Brachycarpus biunguiculatus
Arthropoda	Malacostraca	Decapoda	Palaemonidae	Palaemon serratus
Arthropoda	Malacostraca	Decapoda	Palaemonidae	Periclimenes pedersoni
Arthropoda	Malacostraca	Decapoda	Palaemonidae	Periclimenes yucatanicus