Family

Nileidae Angelin, 1854

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Aiheeseen liittyvät julkaisut

Fortey, R. A. 1986. The type species of the Ordovician trilobite Symphysurus: systematic functional morphology and terrace ridges.Paläontologische Zeitschrift 60 , 3/4,255-275. DOI:10.1007/BF02985671

List of species

1. Nileus armadillo Dalman, 1827

2. Nileus exarmatus Tjernvik, 1956

3. Nileus limbatus Brøgger, 1882

4. Nileus zhuravlevi Krylov, 2019 | Darriwilian

5. Symphysurus angustatus (Boeck, 1838)

6. Symphysurus palpebrosus (Dalman, 1827)

7. Varvia breviceps (Angelin, 1854)

8. Varvia longicauda Tjernvik, 1956 | Varangu Stage

Luokittelu

Organism group	Biota
Kingdom	Animalia
Phylum	Arthropoda
Subphylum	Trilobita
Order	Asaphida
Superfamily	Cyclopygoidea
Family	Cyclopygidae
	Nileidae
Genus	Nileus
	Symphysurus
	Varvia