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Placozoa
| Placozoa | |
|---|---|
| |
| Scientific classification | |
| Kingdom: | |
| Subkingdom: | |
| Phylum: | Placozoa
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The Placozoa are an animal phylum, a primitive form of invertebrate.[1] They are the simplest in structure of all metazoa.They have been described as "the simplest animals on Earth."[2]
The Placozoa is usually considered to have only one species, Trichoplax adhaerens, but there is enough genetic diversity that it is possible that there are multiple, morphologically similar species.[3] Since 2018, three other species in two groups have been described.
- ↑ Barnes, Robert D. 1982. Invertebrate zoology. Holt-Saunders, Philadelphia, PA. p84 ISBN 0-03-056747-5.
- ↑ Pennisi, Elizabeth (2021). "The simplest of slumbers". Science. 374 (6567): 526–529. doi:10.1126/science.acx9444. ISSN 1095-9203. PMID 34709907. S2CID 240154099.
- ↑ Voigt O; et al. (2004). "Placozoa: no longer a phylum of one". Current Biology. 14 (22): R944–5. doi:10.1016/j.cub.2004.10.036. PMID 15556848. S2CID 11539852.
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