Order
Librostoma Fortey, 1990
Aiheeseen liittyvät julkaisut
Thorslund, P. 1930. Über einige neue Trilobiten aus dem älteren Leptænakalk Dalekarliens. Bulletin of the Geological Institutions of the University of Uppsala 22, 299-303.
Eichwald, E. 1860. Lethaea Rossica ou Paléontologie de la Russie. Premier volume. Ancienne Période en deux sections. pp. XIX+1–1657. E. Schweizerbart. DOI:10.5962/bhl.title.52391
List of species
1. Harpes darlecarlicus Thorslund, 1930 | Upper Ordovician
2. Harpides plautini Schmidt, 1894 | Volkhov Stage
3. Hibbertia costatus (Angelin, 1854) | Pirgu Stage
4. Hibbertia wegelini (Angelin, 1854) | Pirgu Stage
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Luokittelu
| Organism group | Biota |
| Kingdom | Animalia |
| Phylum | Arthropoda |
| Subphylum | Trilobita |
| Order | Asaphida |
| Corynexochida | |
| Librostoma | |
| Harpetida | |
| Lichida | |
| Olenida | |
| Phacopida | |
| Proetida | |
| Ptychopariida | |
| Redlichiida | |
| Family | Changshaniidae |
| Kingstoniidae |