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    Placozoa - Wikipedia

    Placozoa is a phylum of marine and free-living (non-parasitic) animals. They are simple blob-like animals without any body part or organ, and are merely aggregates of cells. Moving in water by ciliary motion, eating food by engulfment, reproducing by fission or budding, placozoans are described as "the simplest … See more

    Trichoplax was discovered in 1883 by the German zoologist Franz Eilhard Schulze, in a seawater aquarium at the Zoological Institute in Graz, Austria. The generic name is derived from the classical Greek θρίξ (thrix), … See more

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    Placozoans do not have well-defined body plan much like amoebas, unicellular eukaryotes. As Andrew Masterson reported: "they are as close as it is possible to get to … See more

    There is no convincing fossil record of the placozoa, although the Ediacaran biota (Precambrian, 550 million years ago) organism See more

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  2. Placozoa: Current Biology - Cell Press

    WebFeb 5, 2018 · What are Placozoa? To us, Placozoa are the most unique animals one can think of ( Figure 1 ). The bauplan of these always hungry creatures is by far the simplest of all animals — only some secondarily …

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    Voigt, O., A. Collins, V. Pearse, J. Pearse, A. Ender, H. Hadrys, B. Schierwater. 2004. Placozoa – no longer a phylum of one. Current Biology, 14/22: R944-R945. Accessed April 09, 2013 at http://www.sciencedirect.com/science/article/pii/S0960982204008413 .
    animaldiversity.org
    Placozoans are tiny amazing animals. Very little is known about them because they have never been observed in their natural habitat. No one knows what substrate they live on or what they eat in nature. It is even unknown whether or not they reproduce sexually like most animals.
    A placozoan is a small, flattened animal, typically about one mm across and about 25 µm thick. Like the amoebae they superficially resemble, they continually change their external shape. In addition, spherical phases occasionally form which may facilitate movement. Trichoplax lacks tissues and organs.
    en.wikipedia.org
    Placozoa ( / plækəˈzoʊə /, "flat animals" ) is a phylum of marine and free-living (non-parasitic) animals. They are simple blob-like animals without any body part or organ, and are merely aggregates of cells.
    en.wikipedia.org
  4. The placozoan Trichoplax | Nature Methods

  5. Introduction to Placozoa - University of California …

    WebPlacozoans are tiny, flat, round animals with four types of cells and no nervous system. They are very simple and mysterious, and their phylogenetic position is uncertain. Learn about their morphology, …

  6. World Placozoa Database - Intro - World Register of Marine Species

  7. The enigmatic Placozoa part 1: Exploring evolutionary …

    WebSep 1, 2021 · The phylum Placozoa presently harbors three formally described species, while several dozen “cryptic” species are yet awaiting their description. The phylogenetic position of placozoans has recently …

  8. The Trichoplax genome and the nature of placozoans

    WebAug 21, 2008 · Here we report the sequencing and analysis of the ∼ 98 million base pair nuclear genome of the placozoan Trichoplax adhaerens. Whole-genome phylogenetic analysis suggests that placozoans belong...

  9. Frontiers | Phylogenomics and the first higher …

    WebDec 8, 2022 · Placozoa is a phylum of simple, ameboid animals with high genetic diversity and cryptic species. This study uses nuclear genomic data to reconstruct the first phylogenomic tree and the first higher taxonomy …

  10. ADW: Placozoa: INFORMATION

    WebDe­vel­op­ment. New an­i­mals may be pro­duced via bi­nary fis­sion or bud­ding. Bud­ding cre­ates mul­ti­cel­lu­lar fla­gel­lated “swarm­ers,” each of which be­comes a new in­di­vid­ual. Sex­ual re­pro­duc­tion may occur, in which …

  11. Brief History of Placozoa | SpringerLink