''Nileidae'' is a family of
trilobites of the
Asaphida
Asaphida is a large, morphologically diverse order of trilobites found in marine strata dated from the Middle Cambrian until their extinction during the Silurian. Asaphida contains six superfamilies (Anomocaroidea, Asaphoidea, Cyclopygoidea, ...
order.
These fast-moving nektonic carnivores lived in the
Ordovician and
Cambrian
The Cambrian Period ( ; sometimes symbolized C with bar, Ꞓ) was the first geological period of the Paleozoic Era, and of the Phanerozoic Eon. The Cambrian lasted 53.4 million years from the end of the preceding Ediacaran Period 538.8 million ...
periods.
Genera
*''
Aocaspis'' Dolambi and Gond 1992
*''
Barrandia'' McCoy 1849
*''
Borthaspidella'' Rasetti 1954
*''
Homalopteon'' Salter 1867
*''
Illaenopsis'' Salter 1865
*''
Kodymaspis'' Prantl and Pribyl 1950
*''
Neopsilocephalina'' Yin 1978
*''
Nileus'' Dalman 1827
*''
Parabarrandia
''Parabarrandia'' is a genus of trilobite of the Asaphida order. These fast-moving nektonic carnivores lived in the Ordovician period.Sepkoski, Jac Sepkoski's Online Genus Database/ref>
Species
*''Parabarrandia bohemica'' (Novák, 1884)
Referen ...
'' Prantl and Pribyl 1949
*''
Peraspis'' Whittington 1965
*''
Petrbokia'' Pribyl and Vanek 1965
*''
Platypeltoides'' Pribyl 1949
*''
Poronileus'' Fortey 1975
*''
Psilocephalinella'' Kobayashi 1951
*''
Symphysurina'' Ulrich 1924
*''
Symphysurus'' Goldfuss 1843
*''
Varvia'' Thernvik 1965
References
Cyclopygoidea
Trilobite families
Cambrian first appearances
Ordovician extinctions
{{Asaphida-stub