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Ophiomorpha :: Ophiomorpha (n. pl.) An order of tailless amphibians having a slender, wormlike body with regular annulations, and usually with minute scales imbedded in the skin. The limbs are rudimentary or wanting. It includes the caecilians. Called also Gymnophiona and Ophidobatrachia..

Anallantoidea :: Anallantoidea (n. pl.) The division of Vertebrata in which no allantois is developed. It includes amphibians, fishes, and lower forms..

Lagena :: Lagena (n.) The terminal part of the cochlea in birds and most reptiles; an appendage of the sacculus, corresponding to the cochlea, in fishes and amphibians..

Labyrinthodon :: Labyrinthodon (n.) A genus of very large fossil amphibians, of the Triassic period, having bony plates on the under side of the body. It is the type of the order Labyrinthodonta. Called also Mastodonsaurus..

Proteidea :: Proteidea (n. pl.) An order of aquatic amphibians having prominent external gills and four legs. It includes Proteus and Menobranchus (Necturus). Called also Proteoidea, and Proteida..

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..

Amphiuma :: Amphiuma (n.) A genus of amphibians, inhabiting the Southern United States, having a serpentlike form, but with four minute limbs and two persistent gill openings; the Congo snake..

Septomaxillary :: Septomaxillary (n.) A small bone between the nasal septum and the maxilla in many reptiles and amphibians.

Caecilian :: Caecilian (n.) A limbless amphibian belonging to the order Caeciliae or Ophimorpha. See Ophiomorpha.

Operculum :: Operculum (n.) The fold of integument, usually supported by bony plates, which protects the gills of most fishes and some amphibians; the gill cover; the gill lid..

Amphipneust :: Amphipneust (n.) One of a tribe of Amphibia, which have both lungs and gills at the same time, as the proteus and siren..

Amphibia :: Amphibia (pl. ) of Amphibiu.

Stegosauria :: Stegocephala (n. pl.) An extinct order of amphibians found fossil in the Mesozoic rocks; called also Stegocephali, and Labyrinthodonta..

Amphibian :: Amphibian (a.) Of or pertaining to the Amphibia; as, amphibian reptiles..

Amphibia :: Amphibia (n. pl.) One of the classes of vertebrates.

Synantherous :: Synangium (n.) The divided part beyond the pylangium in the aortic trunk of the amphibian heart.

Derotremata :: Derotremata (n. pl.) The tribe of aquatic Amphibia which includes Amphiuma, Menopoma, etc. They have permanent gill openings, but no external gills; -- called also Cryptobranchiata..

Roe :: Roe (n.) The ova or spawn of fishes and amphibians, especially when still inclosed in the ovarian membranes. Sometimes applied, loosely, to the sperm and the testes of the male..

Congo Snake :: Congo snake () An amphibian (Amphiuma means) of the order Urodela, found in the southern United States. See Amphiuma..

Epipubis :: Epipubis (n.) A cartilage or bone in front of the pubis in some amphibians and other animals.

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