Tunicata

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Tunicata
Rango fossile:
Cambrian – presente,
500–0 Ma[1][2] (forsan Ediacaran, 557 Ma[3][4])
Polycarpa aurata
Classification scientific
Regno: Animalia
Phylo: Chordata
(sin rango) Olfactores
Subphylo
Tunicata
Lamarck, 1816[5]
Synonymia
  • Urochordata Lankester, 1877
Classes e generes fossile:

Tunicata es un subphylo de Chordata Olfactores.

Tunicates son marin animales invertebrate. Pote haber un modo de vita pelagic o sessile epibenthic (in le caso del adulte ascidianes). Alcun tunicates son solitari, altere se replica per gemmation e forma colonias de zoides. Lor mobile larvas ha un notochorda e resimila un larva de rana.

Tunicates son characterisate per lor "tunica" (unic copertura externe), un cuticula constituite de proteinas e complex carbohydratos (cuje tunicina, un typo de cellulosa). In alcun species, tunica es tenue, translucido e gelatinose; in altere es spisse e rigide. Al contrario de altere exoskeleto, le tunica pote crescer con le animal.

Phylogenia[modificar | modificar fonte]

Le studio del phylogenia molecular monstra que le previe classe del Ascidiacea non es monophyletic. Le cladogramma actualisate es le sequente[6][1]:

Tunicata

 Appendicularia




Stolidobranchia 

Molgulidae




Styelidae



Pyuridae






Thaliacea

Doliolida



Salpida



 Enterogona 

Phlebobranchia



Aplousobranchia







Galeria[modificar | modificar fonte]

Referentias[modificar fonte]

  1. ↑ 1,0 1,1 Karma Nanglu, Rudy Lerosey-Aubril, James C. Weaver, Javier Ortega-Hernández (2023-06-06). "A mid-Cambrian tunicate and the deep origin of the ascidiacean body plan" (in en). Nature communications. doi:10.1038/s41467-023-39012-4. 
  2. ↑ "Geochronological constraint on the Cambrian Chengjiang biota, South China" (in en) (2018). Journal of the Geological Society 175 (4): 659–666. doi:10.1144/jgs2017-103. ISSN 0016-7649. Bibcode: 2018JGSoc.175..659Y. 
  3. ↑ "A new metazoan from the Vendian of the White Sea, Russia, with possible affinities to the ascidians" (2012). Paleontological Journal 46: 1–11. doi:10.1134/S0031030112010042. 
  4. ↑ "New Ediacaran fossils from the Ukraine, some with a putative tunicate relationship" (in en) (2021-12-01). PalZ 95 (4): 623–639. doi:10.1007/s12542-021-00596-1. ISSN 1867-6812. 
  5. ↑ Nielsen, C. (2012). "The authorship of higher chordate taxa". Zoologica Scripta 41 (4): 435–436. doi:10.1111/j.1463-6409.2012.00536.x. 
  6. ↑ 6,0 6,1 Giribet, Gonzalo (2018-04-27). "Phylogenomics resolves the evolutionary chronicle of our squirting closest relatives". BMC Biology 16 (1): 49. doi:10.1186/s12915-018-0517-4. ISSN 1741-7007. PMID 29703197. 
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