Trachystomata

Trachystomata: Trachystomata Tra`chy*stom"a*ta, n. pl. [NL., fr. Gr. ? rough + stoma.] (Zo["o]l.) An order of tailed aquatic amphibians, including {Siren} and {Pseudobranchus}. They have anterior legs only, are eel-like in form, and have no teeth except a small patch on the palate. The external gills are persistent through life. [1913 Webster]

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Siren (amphibian) — Not to be confused with order Sirenia (manatees and dugongs) Taxobox name = Sirens image width = 240px image caption = Siren intermedia regnum = Animalia phylum = Chordata classis = Amphibia subclassis = Lissamphibia ordo = Caudata subordo =… … Wikipedia
СИРЕНОВЫЕ — (Sirenidae), семейство хвостатых земноводных (по др. системе, подотряд (Sirenoidea, или Meantes) отр. трахистомовых (Trachystomata)). Дл. от 15 до 90 см. Тело длинное, вальковатое, с веслообразным хвостом. Есть только передние недоразвитые… … Биологический энциклопедический словарь
sound production — ▪ animal in animals, the initiation of sound as a means of information transmission. Sounds are termed vocal when produced in the respiratory system and mechanical when produced by mutual contact of body parts or by contact with some… … Universalium

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