Metazoa
Exemples de metazoaris
| Règne | Animalia |
|---|---|
| Domeni | Eukaryota |
| Sosdomeni | Unikonta |
| Superrègne | Opisthokonta |
Metazgeniaoa
Los metazoaris (del grèc meta, aprèp e zôon, animal, per oposicion als protozoaris) es lo nom modèrne del taxon constituït pels animals (membres del règne animal) multicellulars. Los metazoaris son d'organismes eucariòtas multicellulars mobils eterotròfs (tiran lor energia de la matèria viventa ja constituida) apareguts fa 700 milions d’annadas. Esquematicament, los metazoaris son d'ensembles de cellulas que banhan dins un mitan interior e separats del mitan exterior.
La filogenia dels metazoaris es encara plena d'incertituds. Las taulas çai contra se devon considerar coma un exemple. Òm notarà que la Filogenia modèrna a completament abandonat la nocion d'invertebrat.
Lo caractèr monofiletic del taxon sembla plan establit. En tèrmes mai simples, totes los animals multicellulars an un antecessor comun que totes sos descendents actuals son d'animals multicellulars.
Los metazoaris an una reparticion mondiala, e ocupan totes los mitans, tanben per exemple los fumadors negres.
De legir
Classificacion Filogenetica del vivent per Guillaume Lecointre e Hervé Le Guyader a las edicions Belin
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