What is characteristic as chordates but not found in invertebrates?

Chordates are characterized by having a notochord, a dorsal nerve cord, pharyngeal slits, and a post-anal tail at some stage of their development. These features distinguish them from invertebrates, which lack a notochord and a true backbone. Additionally, chordates possess a more complex nervous system and often exhibit more advanced anatomical structures, such as a head with a brain. These characteristics contribute to the evolutionary success and diversity of chordates compared to invertebrates.