| Modicia laevinucha TRILOBITES Marjum Fm. House Range, Utah Size: The largest specimen is about 2.3 cm. I have listed this as it was labeled when I inherited the specimen. It has been suggested that these may be Elrathia marjumia. I am no trilobite expert and so you need to decide for yourself. Price: $50 US ID number: fs729 | 
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