Acanthocephala :: Acanthocephala (n. pl.) A group of intestinal worms, having the proboscis armed with recurved spines..
Acephala :: Acephala (n. pl.) That division of the Mollusca which includes the bivalve shells, like the clams and oysters; -- so called because they have no evident head. Formerly the group included the Tunicata, Brachiopoda, and sometimes the Bryozoa. See Mollusca..
Cephalaspis :: Cephalaspis (n.) A genus of fossil ganoid fishes found in the old red sandstone or Devonian formation. The head is large, and protected by a broad shield-shaped helmet prolonged behind into two lateral points..
Cephalata :: Cephalata (n. pl.) A large division of Mollusca, including all except the bivalves; -- so called because the head is distinctly developed. See Illustration in Appendix..
Ganocephala :: Ganocephala (n. pl.) A group of fossil amphibians allied to the labyrinthodonts, having the head defended by bony, sculptured plates, as in some ganoid fishes..
Gyrencephala :: Gyrencephala (n. pl.) The higher orders of Mammalia, in which the cerebrum is convoluted..
Interphalangeal :: Interphalangeal (a.) Between phalanges; as, interphalangeal articulations..
Lipocephala :: Lipocephala (n. pl.) Same as Lamellibranchia.
Lissencephala :: Lissencephala (n. pl.) A general name for all those placental mammals that have a brain with few or no cerebral convolutions, as Rodentia, Insectivora, etc..
Lyencephala :: Lyencephala (n. pl.) A group of Mammalia, including the marsupials and monotremes; -- so called because the corpus callosum is rudimentary..
Phalanger :: Phalanger (n.) Any marsupial belonging to Phalangista, Cuscus, Petaurus, and other genera of the family Phalangistidae. They are arboreal, and the species of Petaurus are furnished with lateral parachutes. See Flying phalanger, under Flying..