Protolloydolithus
| Protolloydolithus Temporal range:  | |
|---|---|
| Scientific classification   | |
| Kingdom: | Animalia | 
| Phylum: | Arthropoda | 
| Clade: | †Artiopoda | 
| Class: | †Trilobita | 
| Order: | †Asaphida | 
| Family: | †Trinucleidae | 
| Genus: | † Williams, 1948 | 
Protolloydolithus is a genus of trinucleid trilobites found in Ordovician rocks in Gilwern Hill, Powys, Wales.
References
- The World Encyclopedia of Fossils& Fossil-Collecting, Steve Parker
- Protolloydolithus fact file