Original: Unique retractile sensory filaments justify the Vampire Squid's placement in its own order: Vampyromorphida (formerly Vampyromorpha), which shares similarities with both squid and octopuses.
Simplified: It has special filaments it can retract; because of this, it has been placed in its own order: Vampyromorphida (formerly Vampyromorpha). It has similarities with both squid and octopi.