| Agnathiellidae | |
|---|---|
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Gnathostomulida |
| Order: | Bursovaginoidea |
| Family: | Agnathiellidae Sterrer, 1972 |
Agnathiellidae is a family of worms belonging to the order Bursovaginoidea. [1]
Genera: [1]
Parazoa are a taxon with sub-kingdom category that is located at the base of the phylogenetic tree of the animal kingdom in opposition to the sub-kingdom Eumetazoa; they group together the most primitive forms, characterized by not having proper tissues or that, in any case, these tissues are only partially differentiated. They generally group a single phylum, Porifera, which lack muscles, nerves and internal organs, which in many cases resembles a cell colony rather than a multicellular organism itself. All other animals are eumetazoans, which do have differentiated tissues.
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Mesonerilla is a genus of polychaetes in the Nerillidae family. It contains the following species:
Parhippolyte sterreri is a species of marine decapod crustacean in the family Barbouriidae, formerly placed in the genus Somersiella. It is found in marine caves around the Bahamas, Cuba and Mexico and inland anchialine caves in Bermuda.
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Nemertodermatida is a class of Acoelomorpha, comprising 18 species of millimetre-sized turbellariform, mostly interstitial worms.
Ascopariidae is a family of nemertodermatid worms.
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Ascoparia is a genus of worms belonging to the family Ascopariidae.
Austrognathiidae is a family of worms belonging to the order Bursovaginoidea.
Gnathostomulidae is a family of worms belonging to the order Bursovaginoidea.
Pterognathiidae is a family of worms belonging to the order Filospermoidea.
Mesognathariidae is a family of worms belonging to the order Bursovaginoidea.
Haplognathia is a genus of worms belonging to the family Haplognathiidae.
Cosmognathia is a genus of worms belonging to the family Pterognathiidae.
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