pinnipedes

from The Century Dictionary.

• In ornithology:
• Same as Pinnatipedes.
• Same as Totipalmatæ or Steganopodes.
• In mammalogy, same as Pinnipedia.
• In Crustacea, crabs which have some of the limbs like flippers, fitted for swimming; the paddle-crabs, shuttle-crabs, or swimming-crabs. See cut under paddle-crab.

from the GNU version of the Collaborative International Dictionary of English.

• noun plural (Zoöl.) Same as steganopodes.