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.