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Hyperoartia or Petromyzontida is a disputed group of vertebrates that includes the modern lampreys and their fossil relatives. Examples of hyperoartians from early in their fossil record are Endeiolepis and (which possessed a calcified branchial basket), fish-like animals with hypocercal tails that lived during the Late Devonian Period. Some paleontologists still place these forms among the "ostracoderms" (jawless armored fishes) of the class Anaspida, but this is increasingly considered an artificial arrangement based on ancestral traits.

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rdf:type
rdfs:label
  • Hyperoartia (en)
  • جلكانيات (ar)
  • Hiperoartis (ca)
  • Hyperoartia (es)
  • Hyperoartia (eu)
  • Hyperoartia (fr)
  • 칠성장어류 (ko)
  • 七鰓鰻亞綱 (zh)
rdfs:comment
  • الجلكانيات (الاسم العلمي: Petromyzontida) أو دائريات الفم (الاسم العلمي: Hyperoartia) هو صنف حيواني يتبع طائفة اللافكيات من شعيبة الفقاريات، عليها خلاف في التصنيف تضم الجلكيات الحديثة وأقاربها المتحجرة. (ar)
  • Els hiperoartis (Hyperoartia) són una classe de peixos sense mandíbules (àgnats) que inclou les llampreses modernes i els seus parents fòssils. Alguns exemples d'hiperoartis del registre fòssil més antics són i , peixos que van viure al Devonià superior. (ca)
  • Hyperoartia edo Petromyzontida ornodunen talde bat da, egungo lanproiak eta bere senide fosilak barnean dituena. Adituen artean barailarik gabeko ornodunen barnean sailkatzea zalantzazkoa da, dibertsitate fosil urria dagoelako. Hona hemen egungo kideak: * generoa (fosil) * generoa (fosil) * generoa (fosil) * Petromyzontiformes ordena – lanproiak (eu)
  • 칠성장어류(Hyperoartia)는 칠성장어와 그 외 멸종된 턱이 없는 물고기 무리이다. 현재 유일하게 존재하고 있는 목은 칠성장어목이다. 나머지 칠성장어류에 속하는 생물들은 고생대 후기에 멸종되었을 것으로 추정하고 있다. 이 무리에 속하는 생물들은 고생대 초기에 나타났을 것으로 짐작하고 있다. (ko)
  • 七鰓鰻亞綱(學名:Petromyzontida),又名八目鰻綱,是脊索動物門圓口綱下的一亞綱。 目前已知共有現存 38 種、已滅絕 5 種的七鰓鰻,其中 18 種為寄生性的肉食動物,鑽入魚類的血肉之中以吸血維生。這 18 種七鰓鰻中有 9 種會進行溯河洄游,另外 9 種則完全生活於淡水。所有非肉食性的物種均生活於淡水,成年不進食,依靠幼體所吸收的營養維持,幼體則為。 (zh)
  • Los hiperoartios (Hyperoartia o Petromyzonti) son una clase de agnatos (animales sin mandíbulas), conocidos popularmente con el nombre de lampreas. Son semejantes externamente a las anguilas, aunque no están emparentados con ellas; tienen el cuerpo gelatinoso, cilíndrico, sin escamas y muy resbaladizo. A pesar de compartir muchas características con los peces, taxonómicamente no se incluyen en este grupo sino que forman un grupo independiente y muy antiguo, situándose en la base del origen de los vertebrados. Son marinas o de agua dulce. Son ovovivíparas. (es)
  • Hyperoartia or Petromyzontida is a disputed group of vertebrates that includes the modern lampreys and their fossil relatives. Examples of hyperoartians from early in their fossil record are Endeiolepis and (which possessed a calcified branchial basket), fish-like animals with hypocercal tails that lived during the Late Devonian Period. Some paleontologists still place these forms among the "ostracoderms" (jawless armored fishes) of the class Anaspida, but this is increasingly considered an artificial arrangement based on ancestral traits. (en)
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