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Ancient Fossil Reveals Early Long-Neck Traits in Dinosaurs

10/16/2025

Summary

Story summary

Huayracursor jaguensis is a 230-million-year-old fossil discovered in the Northern Precordillera Basin in northwestern Argentina.
It measures about 2 meters long and weighs about 18 kilograms, showing early neck elongation.
The discovery suggests that long-necked sauropod traits began earlier than previously believed.
Researchers say the find highlights the Northern Precordillera Basin’s importance for early dinosaur evolution and Triassic phylogeny.

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Story summary

Huayracursor jaguensis is a 230-million-year-old fossil discovered in the Northern Precordillera Basin in northwestern Argentina.
It measures about 2 meters long and weighs about 18 kilograms, showing early neck elongation.
The discovery suggests that long-necked sauropod traits began earlier than previously believed.
Researchers say the find highlights the Northern Precordillera Basin’s importance for early dinosaur evolution and Triassic phylogeny.