Polacanthus skin nodule

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Polacanthus skin nodule

These nodules were mixed in with the overlapping plates on Polacanthus skin similar to those in modern reptiles. Polacanthus lived 132 to 100 million years ago during the lower Cretaceous period

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Media ID 8582841

© Mary Evans Picture Library 2015 - https://copyrighthub.org/s0/hub1/creation/maryevans/MaryEvansPictureID/10705330

Ankylosaur Ankylosauria Archosaur Archosauria Archosauriformes Archosauromorpha Armored Dinosaur Armour Armoured Dinosaur Diapsid Diapsida Dinosaur Dinosauria Dinosauromorpha Dinosaurs Eurypoda Genasauria Herbivore Nodule Ornithischia Ornithischian Prehistoric Quadruped Reptile Nodosaurid

EDITORS COMMENTS
1. Title: "Polacanthus Skin Nodule: A Glimpse into the Ancient Armor of a Lower Cretaceous Herbivore" This image showcases a close-up view of a Polacanthus skin nodule, an intriguing anatomical feature of this fascinating Lower Cretaceous herbivore. Polacanthus, a nodosaurid ankylosaur from the Ornithischian suborder Ankylosauria, lived approximately 132 to 100 million years ago during the early Cretaceous period. The Polacanthus, meaning "many-spined thorn," was a quadrupedal, armored dinosaur characterized by its extensive body covering of bony plates and nodules. These nodules, similar to those found in modern reptiles, were mixed in with the overlapping plates on the Polacanthus' skin. The function of these nodules remains a topic of ongoing research, with theories suggesting they may have served as thermal insulation, protection against predators, or even as a means of communication. Polacanthus was part of the larger Archosauria clade, which includes both dinosaurs and their more ancient ancestors. More specifically, it belongs to the Diapsida subclass, which is characterized by having two openings in the skull for the temporal fenestrae. The Polacanthus' anatomy also places it within the Dinosauria, Ankylosauria, Nodosauridae, and Polacanthinae taxonomic groups. This image offers a unique window into the intricate and complex anatomy of this prehistoric creature, providing a glimpse into the rich diversity of life that once roamed our planet. The Polacanthus' armor, with its nodules and overlapping plates, serves as a testament to the incredible adaptations that allowed ancient organisms to thrive in their environments and ultimately shape the world we know today.

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