Metazoa

Metazoa

Metazoa , subkingdom of the animal kingdom comprising the multicellular animals in the traditional two-kingdom system of taxonomic classification, in which living organisms were considered to be either plants or animals. Metazoa included all animals except the protozoans, formerly classified as in the phylum Protozoa but now classified in the kingdom Protista . The term is still used informally.

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Craniata

Craniata (Vertebrata; vertebrates; phylum Chordata) The subphylum of animals that have a bony or cartilaginous skull and a dorsal vertebral column. It includes the fish, amphibians, reptiles, birds, and mammals, which appear successively in the fossil record, starting in the Ordovician. See also BONE; and CARTILAGE.

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AILSA ALLABY and MICHAEL ALLABY. "Craniata." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. 10 Feb. 2012 <http://www.encyclopedia.com>.

AILSA ALLABY and MICHAEL ALLABY. "Craniata." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. (February 10, 2012). http://www.encyclopedia.com/doc/1O13-Craniata.html

AILSA ALLABY and MICHAEL ALLABY. "Craniata." A Dictionary of Earth Sciences. 1999. Retrieved February 10, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O13-Craniata.html

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Craniata

Craniata (kingdom Metazoa, phylum Chordata) The subphylum that comprises animals that have a bony or cartilaginous skull and a dorsal vertebral column. See also VERTEBRATA.

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MICHAEL ALLABY. "Craniata." A Dictionary of Zoology. 1999. Encyclopedia.com. 10 Feb. 2012 <http://www.encyclopedia.com>.

MICHAEL ALLABY. "Craniata." A Dictionary of Zoology. 1999. Encyclopedia.com. (February 10, 2012). http://www.encyclopedia.com/doc/1O8-Craniata.html

MICHAEL ALLABY. "Craniata." A Dictionary of Zoology. 1999. Retrieved February 10, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O8-Craniata.html

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Craniata

Craniata See Chordata.

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"Craniata." A Dictionary of Biology. 2004. Encyclopedia.com. 10 Feb. 2012 <http://www.encyclopedia.com>.

"Craniata." A Dictionary of Biology. 2004. Encyclopedia.com. (February 10, 2012). http://www.encyclopedia.com/doc/1O6-Craniata.html

"Craniata." A Dictionary of Biology. 2004. Retrieved February 10, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O6-Craniata.html

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Metazoa

Metazoa See ANIMALIA.

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AILSA ALLABY and MICHAEL ALLABY. "Metazoa." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. 10 Feb. 2012 <http://www.encyclopedia.com>.

AILSA ALLABY and MICHAEL ALLABY. "Metazoa." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. (February 10, 2012). http://www.encyclopedia.com/doc/1O13-Metazoa.html

AILSA ALLABY and MICHAEL ALLABY. "Metazoa." A Dictionary of Earth Sciences. 1999. Retrieved February 10, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O13-Metazoa.html

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Metazoa

Metazoa See ANIMALIA.

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MICHAEL ALLABY. "Metazoa." A Dictionary of Zoology. 1999. Encyclopedia.com. 10 Feb. 2012 <http://www.encyclopedia.com>.

MICHAEL ALLABY. "Metazoa." A Dictionary of Zoology. 1999. Encyclopedia.com. (February 10, 2012). http://www.encyclopedia.com/doc/1O8-Metazoa.html

MICHAEL ALLABY. "Metazoa." A Dictionary of Zoology. 1999. Retrieved February 10, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O8-Metazoa.html

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