description Irritator challengeri Overview
Irritator challengeri is a spinosaurid theropod known from an Early Cretaceous skull discovered in northeastern Brazil's Romualdo Formation. The genus was described in 1996, and its name records the researchers' irritation after finding that fossil dealers had artificially lengthened the specimen's snout with plaster. Its long, narrow jaws and conical teeth are characteristic of spinosaurs and are consistent with catching fish and other small prey.
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How good is Irritator challengeri?
Irritator challengeri scores 7.05/10 (Good) on Lunoo, making it a well-rated option in the Fossil category. Brazilian spinosaurid with memorable history; skull alteration and limited material reduce consensus.
What are the best alternatives to Irritator challengeri?
See our alternatives page for Irritator challengeri for a ranked list with scores. Top alternatives include: Sue (T. rex FMNH PR 2081), Stan (T. rex BHI 3033), Scotty (T. rex RSM P2523.8).
How does Irritator challengeri compare to Sue (T. rex FMNH PR 2081)?
See our detailed comparison of Irritator challengeri vs Sue (T. rex FMNH PR 2081) with scores, features, and an AI-powered verdict.
Is Irritator challengeri worth it in 2026?
With a score of 7.05/10, Irritator challengeri is a solid option in Fossil. See all Fossil ranked.
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