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Bottom: Metamonada, 1-anterior flagella, 2-parabasal body, 3-undulating membrane, 4-posterior flagellum, 5-nucleus, 6- axostyle. Excavata is an extensive and diverse but paraphyletic group of unicellular Eukaryota. [1] [2] The group was first suggested by Simpson and Patterson in 1999 [3] [4] and the name latinized and assigned a rank by Thomas ...
Excavate. Excavate may refer to: Excavate or Excavata, a group of organisms. Excavate, to perform an excavation (archaeology)
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Many of the protist species classified into the supergroup Excavata are asymmetrical, single-celled organisms with a feeding groove “excavated” from one side. This supergroup includes heterotrophic predators, photosynthetic species, and parasites. Its subgroups are the diplomonads, parabasalids, and euglenozoans.
Dec 24, 2022 · Key Points. Excavata are a supergroup of protists that are defined by an asymmetrical appearance with a feeding groove that is “excavated” from one side; it includes various types of organisms which are parasitic, photosynthetic and heterotrophic predators. Excavata includes the protists: Diplomonads, Parabasalids and Euglenozoans.
Excavata Like Rhizaria, Excavata ( Figures 5(e)–5(j) ) are primarily a collection of protozoa, but also include a single group of secondary algae. The most recent common ancestor of excavates was a flagellate (probably a free-living bacterivore) with a characteristic broad feeding groove, and various extant free-living groups still have this ...
Other articles where Excavata is discussed: protozoan: Annotated classification: Excavata Predominantly heterotrophic organisms possessing a distinctive suspension feeding groove (ventral cytostome) and a recurrent flagellum (often beats over cytostome with a slow undulating motion). Placement of Heterolobosea and Euglenozoa within Excavata remains a source of debate, due to confounding ...
