![cover image](https://wikiwandv2-19431.kxcdn.com/_next/image?url=https://upload.wikimedia.org/wikipedia/commons/thumb/a/a0/Cryptolithoides_ulrichi.jpg/640px-Cryptolithoides_ulrichi.jpg&w=640&q=50)
Trinucleioidea
Superfamily of trilobites / From Wikipedia, the free encyclopedia
Trinucleioidea is a superfamily of trilobites. Traditionally placed within the Asaphida, it is now sometimes considered its own order, Trinucleida.[1][2]
![Thumb image](http://upload.wikimedia.org/wikipedia/commons/thumb/5/58/Damghan_Ampyx_ghobadipour_fossil_from_Lashkark_Formation%2C_Ordovician%2C_Damghan%2C_Iran.jpg/640px-Damghan_Ampyx_ghobadipour_fossil_from_Lashkark_Formation%2C_Ordovician%2C_Damghan%2C_Iran.jpg)
Quick Facts Scientific classification, Families ...
Trinucleioidea | |
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Cryptolithoides ulrichi, a trilobite in the family Trinucleidae | |
Scientific classification ![]() | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Arthropoda |
Class: | †Trilobita |
Order: | †Asaphida |
Superfamily: | †Trinucleioidea |
Families | |
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