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Excavata was originally proposed based on a distinctive morphology, namely a particular feeding groove form and associated cytoskeleton system, found in many enigmatic flagellated protists.
The morphology of choanoflagellates was recognized early on as resembling the collar cells of sponges, and suggesting a possible relationship to animals. The Mesomycetozoa form a small group of parasites, primarily of fish, and at least one form that can parasitize humans.
24 de ago. de 2022 · Animals and fungi have radically distinct morphologies, yet both evolved within the same eukaryotic supergroup: Opisthokonta 1, 2.
27 de mar. de 2014 · We discuss here all aspects of aphelid investigations: history of our knowledge, life cycle peculiarities, the morphology (including the ultrastructure), molecular phylogeny, ecology, and provide a taxonomic revision of the phylum supplied with a list of species.
The morphology of choanoflagellates was recognized early on as resembling the collar cells of sponges, and suggesting a possible relationship to animals. The Mesomycetozoa form a small group of parasites, primarily of fish, and at least one form that can parasitize humans.
21 de sept. de 2015 · Taxon-rich phylogenomics provides an evolutionary framework for the opisthokonts • Specialized osmotrophy evolved independently in fungi and animal relatives • Opisthokonts underwent independent secondary losses of the flagellum • The last opisthokont common ancestor had a complex repertoire of chitin synthases
1 de jul. de 2003 · Our data indicate that: (1) choanoflagellates are a monophyletic rather than a paraphyletic assemblage that independently gave rise to animals and fungi as suggested by some authors and (2) the...
