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Hexacrobílids

Infotaula d'ésser viuHexacrobílids
Hexacrobylidae Modifica el valor a Wikidata
Taxonomia
Super-regneHolozoa
RegneAnimalia
FílumChordata
ClasseSorberacea
OrdreAspiraculata
FamíliaHexacrobylidae Modifica el valor a Wikidata
Oswald Seeliger, 1906

Els hexacrobílids (Hexacrobylidae) eren una família de tunicats bentònics, l'única de l'ordre dels sorberacis (Sorberacea) i de la classe dels aspiraculats (Aspiraculata). En la revisió taxonòmica dels Tunicata del 2007, el nom Hexacrobylidae va ser declarat invàlid i els membres de la família es van incloure a la família Molgulidae dins la classe Ascidiacea.[1][2]

S'alimenten d'invertebrats com els nematodes i els petits crustacis. Viuen exclusivament en aigües profundes i tenen una mida que va entre 2 cm i 6 cm de llargada. Són animals solitaris.[3]

Taxonomia

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Ordre Aspiraculata

  • Família Hexacrobylidae
    • Gènere Gasterascidia - acceptat com a Oligotrema Bourne, 1903
      • Gasterascidia lyra - acceptat com a Oligotrema lyra Monniot C. & Monniot F., 1973
      • Gasterascidia sandersi - acceptat com a Oligotrema sandersi (Monniot C. & Monniot F., 1968)
    • Gènere Hexadactylus - acceptat com a Asajirus Kott, 1989
      • Hexadactylus arcticus - acceptat com a Asajirus indicus (Oka, 1913)
      • Hexadactylus eunuchus - acceptat com a Asajirus indicus (Oka, 1913)
      • Hexadactylus ledanoisi - acceptat com a Asajirus ledanoisi (Monniot C. & Monniot F., 1990)
    • Gènere Oligotrema - actualment inclòs dins la família Molgulidae
      • Oligotrema lyra
      • Oligotrema psammites
    • Gènere Sorbera - acceptat com a Oligotrema Bourne, 1903
      • Sorbera unigonas -acceptat com a Oligotrema unigonas (Monniot C. & Monniot F., 1974)
      • Sorbera digonas - acceptat com a Oligotrema psammites Bourne, 1903

Referències

[modifica]
  1. World Register of Marine Species. «Ascidiacea» (en anglès). WoRMS, 2012. [Consulta: 9 abril 2013].
  2. Sanamyan, K. (2007). Database of extant Ascidiacea. Version of 2 November 2007
  3. Barnes, Robert D.. Invertebrate Zoology. Philadelphia, PA: Holt-Saunders International, 1982, p. 1042. ISBN 0-03-056747-5. 
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Hexacrobílids
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