labyrinthic teeth

pl. Palcont .: Teeth having many radiating vertical grooves. [LABYRINTHODON.] lăb-y-rinth-i-çi, s. pl. [Lat., masc. pl. of laby rinthicus =winding.] Ichthy.: The typical family of the Labyrinth i branch i i (q. v.). Freshwater fishes from tropical and sub-tropical regions, capable of living for some time out of water in thick or hardened mud. There are nine genera, of which the best known is Anabas a (q. v.). lab-y-rinth-i-form, a . [Lat. labyrinth us=& labyrinth, and form a form.] Of the form of a labyrinth; marked by sinuous intricate lines. ( Griffith : Cuvier, x. 217.) lăb-y-rinth-ine, a. [From Lat labyrinth us. Like a labyrinth; labyrinthic (q. v.). "Truth has her pleasure-grounds, her haunts of ease And labyrinthine walks." Words worth: Excursion , bk. iv. lab-y-rinth-ô-đòn, s . [Gr. labyrinthos =labyrinth, and odous (gen it. odontos )=a tooth.] Paleontology : 1. The name given by Prof. Owen to agenus of fo il reptiles since raised into an order. [LABYRINTHODONT I A.] The name was given from the labyrinthic windings seen in a cro -section of a tooth, especially when magnified. Prof. Owen believed that the footprints, called from their resemblance to the human hand Cheirotherium (q. v.), were made by an animal of this genus. Tooth of Labyrinthodon. 2. As now restricted, a genus of Labyrinthodonts, belonging to the sub-order or family Euglypta. Only known example, L. leptognathus . (Owen: Brit. A . Rep . , 1874, p 158.) lăb-y-rinth-o-dont, a . & s . [LABYRINTHODON.] A. As adj .: Belonging to, characteristic of, of, or resembling the order Labyrinthodont i a. "The labyrinthodont fauna of the Carboniferous rocks." -Huxley : Critiques and Addre es (1873), p. 185. B. As substantive: 1. Sing .: Any individual of the order Labyrinthodont i a (q. v.). 2. Pl .: The Labyrinthodont i a (q. v.). "I refer to the Labyrinthodonts ."-Huxley: Critiques and Addre es (1873), p. 185. lăb-y-rinth-o-don-ti-a (ti as shi), lab-rinth-o-donts, s. pl. [LABYRINTHODON.] Palæont.: In Prof. Owen's cla ification, the sec. ond order of the cla Reptilia or Reptiles. Now that the Amphibia are quite separated from the Reptiles, the Labyrinthodonts are placed with the former cla . They had an elongated body furnished with a tail. Most had palatine and vomerine teeth. As a rule the dentine was much folded (hence their names). There were three thoracic plates, and a ventral armor of small scutes. The limbs were four, usually, or at least often, pentadactyle. Their closest affinity was not, as was once believed, with the Batrachians, but with the lower members of the cla Amphibia. They could not leap like frogs. They have been found in England, Scotland, Ireland, Germany, Ru ia, Central India, South Africa, Australia, and North America. They occur from the Carboniferous to the Jura ic periods. They frequented fresh water, and were wholly aquatic in the first stage of their development. The Labyrinthodonts have been divided into ten sub-orders, groups, or families: (1) Euglypta, sin, aş; expect, Xenophon, exist. ph = f. lac (2) Brachyopina, (3) Chauliodonta, (4) Athroodonta, (5) unnamed, (6) Arch egos a uri a, (7) Heleothrepta, (8) Nectridea, (9) Aïstopoda, and (10) Micros a uri a. (See these words.) (Rep. Brit. A . for 1873, pp. 225-247; 1874, pp. 149-192.)