Superfamily
Trinucleoidea Hawle et Corda, 1847
Selection of related publications
Bekker, H. 1921. The Kuckers stage of the Ordovician Rocks in NE Estonia.  Acta et Commentationes Universitatis Tartuensis   II,   1,   1-92.
List of species
1. Ampyx nasuta Dalman, 1827 | Ordovician
2. Ampyx simonkovensis (Balashova, 1976) | Kunda Stage
8. Lonchodomas minutus Thorslund, 1948 | Ordovician
13. Lonchodomas volborthi (Schmidt, 1894) | Middle Ordovician
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Classification
| Organism group | Biota | 
| Kingdom | Animalia | 
| Phylum | Arthropoda | 
| Subphylum | Trilobita | 
| Order | Asaphida | 
| Superfamily | Asaphoidea | 
| Cyclopygoidea | |
| Trinucleoidea | |
| Family | Alsataspididae | 
| Dionididae | |
| Raphiophoridae | |
| Trinucleidae |