Placozoa - Wikipedia
Placozoa (/ ˌplækəˈzoʊə / PLAK-ə-ZOH-ə; lit. 'flat animals') [3] is a phylum of marine and free-living (non-parasitic) animals. [4][5] They are blob-like animals composed of aggregations of cells.
Bizarre blob-like animal may hint at origins of neurons
2023年9月20日 · Placozoans, animals so simple they look like blobby pancakes, have been found to contain cells that may hold the ancestors of modern neurons.
The Trichoplax genome and the nature of placozoans
2008年8月21日 · As arguably the simplest free-living animals, placozoans may represent a primitive metazoan form, yet their biology is poorly understood. Here we report the sequencing and analysis of the ∼ 98...
Trichoplax - Wikipedia
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), "hair", and πλάξ (plax), "plate".
ADW: Placozoa: INFORMATION
Placozoans are very small animals, measuring just 2 to 3 mm in diameter and typically 15 to 20 µm thick. They have traditionally been described as being composed only four types of cells: cover (squamous), columnar, glandular, and fiber.
Placozoans, World’s Simplest Animals, Get Their ... - St. Francis …
2022年12月9日 · Published on December 8 in the journal Frontiers in Ecology and Evolution, the study comes more than 100 years after the discovery of these ameboid animals called placozoans. The research is based on genetic makeup — the presence and absence of genes — rather than outward physical appearance, which is traditionally used to classify organisms.
Tiny Sea Creatures Provide Evolution’s Clue to Neuron Origins
2023年9月19日 · Placozoans are tiny animals, around the size of a large grain of sand, which graze on algae and microbes living on the surface of rocks and other substrates found in shallow, warm seas. The blob-like and pancake-shaped creatures are so simple that they live without any body parts or organs.
The placozoan Trichoplax - Nature Methods
2024年4月12日 · After having been largely neglected for more than a century, the tiny marine animal Trichoplax adhaerens is enjoying a revival and is now poised to become a mainstream model organism for the study...
Placozoa: Current Biology - Cell Press
2018年2月5日 · 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 reduced parasites show a similarly simple morphology.
Survey of the Japanese Coast Reveals Abundant Placozoan
2014年6月19日 · Placozoans are flat amoeba-like marine animals about 1–2 mm, made up of only five cell types arranged in three layers 1, 2. They lack neurons and muscle cells, but are not sessile...