Back Isotelus German Isotelus Finnish Isotelus French איסוטלוס HE Isotelus Hungarian Isotelus Italian Isotelus Dutch Isotelus NB Isotelus Polish Isotelus Russian
| Isotelus Temporal range:
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| Isotelus gigas fossil at the Smithsonian National Museum of Natural History | |
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | †Trilobita |
| Order: | †Asaphida |
| Family: | †Asaphidae |
| Genus: | †Isotelus Dekay, 1824 |
| Species | |
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See text | |
Isotelus is a genus of asaphid trilobites from the Middle and Late Ordovician Period, fairly common in the northeastern United States, northwest Manitoba, southwestern Quebec and southeastern Ontario. One species, Isotelus rex, is currently the world's largest trilobite ever found as a complete fossil, and was probably exceeded in size only by Hungioides bohemicus, in which the specimens probably exceeding Isotelus rex in size are only known from partial remains.[1]
- ^ Gutiérrez-Marco, Juan C.; Sá, Artur A.; García-Bellido, Diego C.; Rábano, Isabel; Valério, Manuel (2009). "Giant trilobites and trilobite clusters from the Ordovician of Portugal". Geology. 37 (5): 443–446. Bibcode:2009Geo....37..443G. doi:10.1130/g25513a.1. ISSN 1943-2682.
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