Opisthokont
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The opisthokonts are a broad group of eukaryotes, including both the animal and fungus kingdoms. The opisthokonts, previously called the "Fungi/Metazoa group", are generally recognized as a clade. Opi
Opisthokonta collage
Nuclearia (Nucleariida)
Microsporidian spore (Microsporidia)
Chytrid (flagellated fungus)
Holozoa
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Holozoa is a clade of organisms that includes animals and their closest single-celled relatives, but excludes fungi and all other organisms. Together they amount to more than 1.5 million species of pu
Opisthokont
…after they evolved. Opisthokonts are divided into Holomycota or Nucletmycea (Fungi and all organisms more closely related to Fungi than to animals) and Holozoa (animals and all organisms more closely related to animals than to Fungi); no Opisthokonts basal to the Holomycota/Holozoa (animal-fungal) split have…
A fossilized sample of Bicellum brasieri, a billion-year-old potential holozoan.