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Amargasaurus with Spines on Its Neck

A long-necked Amargasaurus featuring double rows of tall spines along its neck stands quietly near small patches of grass.

An Amargasaurus with a long neck and tall back spines stands calmly beside a patch of grass.
Amargasaurus with Spines on Its Neck
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Amargasaurus Standing on Four Legs

An Amargasaurus stands on four sturdy legs beside small blades of grass. Two parallel rows of elongated spines extend along the top of its long neck, creating a distinct silhouette above its broad body and tapering tail.

Unique Defensive Spines of South American Sauropods

Unlike most other sauropods, Amargasaurus possessed paired rows of sharp neural spines projecting from its neck vertebrae. Paleontologists believe these horn-like structures helped protect the herbivore from large predators in its Cretaceous habitat.

Natural Colors of Amargasaurus

  • Amargasaurus skin: muted olive green or earthy gray-brown
  • Neck spines: weathered charcoal or horn-like pale tan
  • Underbelly: soft cream or light taupe
  • Grass patches: deep green or dry yellowish brown
Questions and answers

Frequently Asked Questions

How long were the spines on the neck of Amargasaurus?
The longest spines on the neck reached up to sixteen inches in length. They grew in two neat rows from the neck bones toward the shoulders.
Did Amargasaurus use its spines for defense or display?
Scientists suspect the neck spines served multiple purposes, including intimidating predators, defending against attacks, and displaying to attract mates.
What did Amargasaurus eat in its natural environment?
As a plant-eating dinosaur, it used its long neck to graze on low-lying vegetation, ferns, and tough conifers growing near prehistoric rivers.
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