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Rare Megaraptor Fossil Discovered in Argentina: New Insights

9/27/2025

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Summary

Story summary

Researchers in Argentina discovered a nearly complete megaraptor fossil, Joaquinraptor casali, dating 66–70 million years.
The specimen includes a crocodilian bone, implying interactions with crocodiles.
About 20% of the skeleton, it is the most complete megaraptor, with skull material for comparison.
Experts consider megaraptors distinct theropods, possibly older than tyrannosaurs; ongoing studies aim to clarify their position.

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Story summary

Researchers in Argentina discovered a nearly complete megaraptor fossil, Joaquinraptor casali, dating 66–70 million years.
The specimen includes a crocodilian bone, implying interactions with crocodiles.
About 20% of the skeleton, it is the most complete megaraptor, with skull material for comparison.
Experts consider megaraptors distinct theropods, possibly older than tyrannosaurs; ongoing studies aim to clarify their position.