Animals

Ainimals ; Temporal range: Cryogenian ? present, 665?0Ma Had'n Archean Proterozoic Pha.
Scientific classification
(unranked):	Unikonta
(unranked):	Obazoa
(unranked):	Opisthokonta
(unranked):	Holozoa
(unranked):	Filozoa
Kinrick:	Animalia ; Linnaeus , 1758
Phyla
	Subkingdom Parazoa Porifera ; Placozoa ; ; Subkingdom Eumetazoa Radiata (unranked) Cnidaria ; Ctenophora ; Trilobozoa † ; ; Bilateria (unranked) Proarticulata † ; Xenacoelomorpha ; Mesozoa (unranked) Monoblastozoa ; ; Nephrozoa (unranked) Superphylum Deuterostomia Chordata ; Echinodermata ; Hemichordata ; Vetulicolia † ; ; Protostomia (unranked) Chaetognatha ( incertae sedis ) ; Orthonectida ; Superphylum Ecdysozoa Arthropoda ; Kinorhyncha ; Loricifera ; Nematoda ; Nematomorpha ; Onychophora ; Priapulida ; Tardigrada ; ; Superphylum Platyzoa Acanthocephala ; Cycliophora ; Gastrotricha ; Gnathostomulida ; Micrognathozoa ; Platyhelminthes ; Rotifera ; ; Superphylum Lophotrochozoa Annelida ; Sipuncula ; Mollusca ; Nemertea ; Brachiopoda ; Bryozoa ; Phoronida ; Hyolitha † ; Entoprocta ; Dicyemida ; ; ; ; ; ;

Ainimals is multicellular , eukaryotic organisms o the kinrick Animalia (forby cried Metazoa ). Aw ainimals are motile , meanin thay can muiv spontaneously an independently, at some pynt in thair lifes. Thair body plan hidnerly becomes fixed as thay develop , tho some unnergang a process o metamorphosis later on in thair lifes . Aw ainimals is heterotrophs : thay maun ingest ither organisms or thair products for sustenance .

Maist kent ainimal phyla appeared in the fossil record as marine species in the Cambrian explosion , aboot 542 million year syne. Ainimals is dealt intae sindry sub-groups, some o whilk is: vertebrates ( birds , mammals , amphibians , reptiles , fish ); molluscs ( clams , eysters , octopuses , ink-fish , snails ); arthropods ( meggie-mony-feets , jennie-hunder-feets , insects , speeders , scorpions , keavies , lapsters , saund-clapper ); annelids ( yirdwirms , gells ); spoonges ; an loch-livers .

References [ eedit | eedit soorce ]

↑ Harzsch, S.; Muller, C. H. (18 Mey 2007). "A new look at the ventral nerve centre of Sagitta : implications for the phylogenetic position of Chaetognatha (arrow worms) and the evolution of the bilaterian nervous system" . Frontiers in Zoology . 4 : 14. doi : 10.1186/1742-9994-4-14 . PMC 1885248 . PMID 17511857 .

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[1] Harzsch, S.; Muller, C. H. (18 Mey 2007). "A new look at the ventral nerve centre of Sagitta : implications for the phylogenetic position of Chaetognatha (arrow worms) and the evolution of the bilaterian nervous system" . Frontiers in Zoology . 4 : 14. doi : 10.1186/1742-9994-4-14 . PMC 1885248 . PMID 17511857 .

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