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- Body cavity (2315 bytes)
1: ... coelom contains major organs, including the [[digestive system]], [[heart]], [[kidney]]s, etc. The co...
3: ...[[Chordate]]s and echinoderms are both Deuterostomes.
7: ... the classification of, for example, the vertebrates.
9: ...hat the coelom may have evolved from gastric pouches ("stomachs" sort of) in [[cnidaria|cnidarians]]. - Animal (16429 bytes)
8: [[Sponge|Porifera]] (sponges)<br>
9: [[Ctenophora]] (comb jellies)<br>
12: [[Bilateria]]<br>
18: ... [[Chordate|Chordata]] (vertebrates, etc.)<br>
32: [[Platyhelminthes]] (flatworms)<br> - Deuterostome (1974 bytes)
1: ...{Taxobox_begin | color = pink | name = Deuterostomes}}
14: ...ecomes the [[anus]], while in protostomes it becomes the [[mouth]].
16: There are three phyla of deuterostomes:
19: * Phylum [[Echinodermata]] ([[starfish]]es, [[sea urchin]]s, [[sea cucumber]]s, etc.)
24: ...te]]s. Cleavage is indeterminate - the cells' fates are not determined early on. Thus if the first f... - Head (anatomy) (526 bytes)
1: ...y simplest animals do not have a head, but most [[bilateria|bilaterally symmetric forms]] do. In [[vertebrat...
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