Family
Holotrachelidae Warburg, 1925
List of species
1. Holotrachelus punctillosus (Törnquist, 1884) | Upper Ordovician
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Klassificering
| Organism group | Biota |
| Kingdom | Animalia |
| Phylum | Arthropoda |
| Subphylum | Trilobita |
| Order | Proetida |
| Suborder | Aulacopleuroidea |
| Bathyuroidea | |
| Proetoidea | |
| Family | Brachymetopidae |
| Glaphuridae | |
| Holotrachelidae | |
| Genus | Holotrachelus |
See also