Chordata-Pristella maxillaris
The organisms found in Phylum Chordata are bilaterally symmetrical. Their body has more than two cell layers, including tissues and organs. The body cavity a true coelom and most possesses a through gut with a non-terminal anus. The Chordata body is monomeric with no head or jaws. At some stage in the organisms life, they possess a hollow dorsal nerve tube, a dorsal cartilaginous rod called a notochord, gill slits in the parangeal region, and a post anal tail, which is an elongation of the body beyond the end of the digestive tract.
These organisms have a partially open circulatory system, but are without excretory organs. They normally reproduce sexually and gonochoristic. The Chordata feed on a variety of organic materials and all live marine environments.
Examples of organisms found in Phylum Chordata include: sea squirts, lancelets, fish, amphibians, reptiles, and mammals.
The Phylum Chordata includes the Subphylum Vertebrata.
Chordata- Agkistrodon piscivorus
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Diversity of vertebrates. (2010). Retrieved from http://www.shsu.edu/~bio_mlt/Chapter3.html
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Ramel, G. (2010). The vertebrata. Retrieved from http://www.earthlife.net/inverts/vertebrata.html