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			== Nucleariida ==
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			File:Nuclearia_sp_Nikko.jpg
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'''Nucleariida''' is a group of amoebae that belong to the [[Eukaryota]] domain, specifically within the [[Opisthokonta]] clade, which also includes animals, fungi, and several other amoeboid groups. Nucleariida are characterized by their fine pseudopodia, which they use for locomotion and feeding. These organisms are found in a variety of freshwater and soil environments, where they play a role in decomposing organic material.

==Characteristics==
Nucleariida amoebae are typically small, ranging from 3 to 15 micrometers in diameter. They possess a distinctive nucleus with a central nucleolus and are covered by a thin layer of clear cytoplasm. Their pseudopodia are thin, filose (thread-like), and highly branched, allowing them to form intricate networks for trapping food particles, primarily bacteria and small eukaryotic cells.

==Habitat and Ecology==
Nucleariida are ubiquitous in freshwater and moist soil habitats. They contribute to the microbial loop by preying on bacteria and other microorganisms, thus playing a crucial role in nutrient cycling and energy flow within their ecosystems. Their presence and abundance can be indicative of the health and biodiversity of their environments.

==Phylogeny and Evolution==
The [[Phylogeny|phylogenetic]] position of Nucleariida has been a subject of considerable interest and debate. Molecular studies have revealed that Nucleariida and [[Fungi]] are closely related, forming a monophyletic group within the Opisthokonta. This relationship suggests that the common ancestor of Nucleariida and Fungi was more animal-like in its characteristics, shedding light on the evolutionary transitions between the major kingdoms of life.

==Research and Importance==
Research on Nucleariida has implications for understanding the evolutionary history of fungi and the broader Opisthokonta clade. By studying the genetic and morphological characteristics of Nucleariida, scientists can gain insights into the early diversification of eukaryotes and the evolutionary pathways that led to the development of complex multicellular life.

==See Also==
* [[Eukaryotic evolution]]
* [[Microbial loop]]
* [[Opisthokonta]]

==References==
<references/>

[[Category:Eukaryotes]]
[[Category:Amoebozoa]]
{{Protist-stub}}

Nucleariida - Revision history

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