Step 1: Understanding the Concept:
Crustacean taxonomy: mantis shrimps are predatory marine malacostracans belonging to order Stomatopoda, equipped with specialized raptorial second maxillipeds.
Step 2: Detailed Explanation:
Taxonomic classification of Mantis Shrimps:
- Class: Malacostraca
- Subclass: Hoplocarida
- Order: Stomatopoda
- Characterized by an unattached carapace, flattened body, and massive, highly modified subchelate raptorial second maxillipeds (claws) modified for rapid spearing or smashing prey (e.g., Squilla mantis, Harpiosquilla raphidea).
- (True prawns, shrimps, and crabs belong to Order Decapoda).
Step 3: Final Answer:
Hence, mantis shrimps belong to Stomatopoda, corresponding to option (D).