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4 Class Secernentea. ... List of Nematoda has 25,000 recorded species from the Nematode phylum. There are estimated to be a million.
In 2019, a study identified one conserved signature indel (CSI) found exclusively in members of the phylum Nematoda through comparative genetic analyses. [38] The CSI consists of a single amino acid insertion within a conserved region of a Na(+)/H(+) exchange regulatory factor protein NRFL-1 and is a molecular marker that distinguishes the ...
Enoplea (enopleans) is a class, which with the classes Secernentea [1] and Chromadorea make up the phylum Nematoda in current taxonomy. [2] [3] [4] The Enoplea are considered to be a more ancestral group than the Chromadorea, and researchers have referred to its members as the "ancestrally diverged nematodes", compared to the "more recently diverged nematodes" of Chromadorea.
Nematoida is a clade of pseudocoelomate free living or parasitic animals.It consists of phyla Nematoda and Nematomorpha. [3] [4] The two groups share a number of features in common; the presence of a cloaca in both sexes, aflagellate sperm, and a cuticle made of collagen.
Phylum: Nematoda: Class: ... The World Register of Marine Species shows the following suborders within ... "A molecular evolutionary framework for the phylum Nematoda
Nematodes (Nematoda or roundworms) are a phylum of animals. The phylum is subdivided in 3 classes : Chromadorea, Enoplea and Secernentea. The phylum is subdivided in 3 classes : Chromadorea, Enoplea and Secernentea.
The Enoplia are a subclass of nematodes in the class ... Vida, J. T.; Thomas, W. Kelley (5 March 1998). "A molecular evolutionary framework for the phylum Nematoda". ...
The Chromadorea are a class of the roundworm phylum, Nematoda.They contain a single subclass (Chromadoria) and several orders.With such a redundant arrangement, the Chromadoria are liable to be divided if the orders are found to form several clades, or abandoned if they are found to constitute a single radiation.