Superfamily

Cyclopygoidea Raymond, 1925

Selection of related publications

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 latifrons Nielsen, 1995

4. Nileus limbatus Brøgger, 1882

5. Nileus orbiculatoides Schrank, 1972

6. Nileus zhuravlevi Krylov, 2019 | Darriwilian

7. Symphysurus angustatus (Boeck, 1838)

8. Symphysurus palpebrosus (Dalman, 1827)

9. Varvia breviceps (Angelin, 1854)

10. Varvia longicauda Tjernvik, 1956 | Varangu Stage

Classification

Organism group	Biota
Kingdom	Animalia
Phylum	Arthropoda
Subphylum	Trilobita
Order	Asaphida
Superfamily	Asaphoidea
	Cyclopygoidea
Family	Cyclopygidae
	Nileidae
Superfamily	Trinucleoidea