The Glyptodon Was a Prehistoric Armadillo so Big that Early Humans Used its Shells for Shelter

The Glyptodon Was a Prehistoric Armadillo so Big that Early Humans Used its Shells for Shelter

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The Glyptodon may seem like just a big Armadillo, but it was the size of a car and could crush early Humans with its clubbed tail.

In prehistoric times, it seems as though every animal was bigger than its modern counterpart.

Mammoths were taller, hairier, and heavier than elephants. Ancient sloths grew to the size of modern-day Elephants. Alligators and Crocodiles routinely grew to the length of a city bus. And Snakes were so big that they could eat Alligators.

One such enormous prehistoric creature that dwarfs its modern counterpart and a creature that our ancestors came in contact with was the Glyptodon, a Giant Armadillo about the size of a Volkswagen Beetle.

Glyptodon reappeared on the scene in Y 1823, when an Uruguayan naturalist was shocked to unearth what turned out to be an 8 in thick, 7lb femur unlike anything he had seen before.

The discovery of more large bone fragments in the area led experts to hypothesize that they belonged to an enormous ground Sloth, but when a strange collection of bony plates turned up, a new theory was put forward: at some point in history, a Giant Armadillo had walked the earth.

Everyone had a different idea about what the new discovery should be called and with all the different names being batted around in the scientific literature, many did not realize they were all talking about the same creature.

The English biologist Richard Owen pointed out what was happening, and since he resolved the confusion, it was his name that stuck: Glyptodon, meaning “grooved tooth.”

Like an Armadillo, Glyptodon had a head and tail that protruded from a large shell. It also had an armored back made up of more than 1,000 bony plates that fit together tightly, which made the Glyptodon’s back look more like a turtle’s than a modern Armadillo’s. But unlike either of those creatures, Glyptodon specimens regularly grew to 10 ft in length and weighed 1 ton.

Glyptodons lived from approximately 5.3-M to 11,700 yrs ago, which means that early humans coexisted with these large creatures. But our ancestors had little to fear because these herbivores were not hunters. They ate primarily plants as they roamed across present-day North and South America.

Just as Humans adapted to a wide range of climates and ecosystems on Earth, Glyptodons did the same.

Some thrived in tropical areas, other adapted to life on grassland prairies. A few managed to make their home in cold climates. But most fossils of these creatures come from a swath of South America that extends from the Amazon River basin to the vast plains of Argentina.

Its size and hard backplates were not the only features that made this creature stand out. Its tail had a bony club on it, sometimes with spikes, that the creature could wield with deadly results.

If you got too close to a Glyptodon protecting its young, a quick whip of the tail could crush your skull instantly.

The picture that begins to emerge will sound familiar to dinosaur fans, who will recognize many of the distinctive features of Ankylosaur: a big lumbering body, a bony mantle, and a deadly club tail.

The similarities are not a coincidence, but neither do they point to any link between these giant mammals and the famous Ornithischian dinosaur. What is actually at work here is convergent evolution, a mechanism by which unrelated species evolve similar structures because they are useful in a particular environment.

In short, similar problems like being a large, slow-moving grazer with the need to defend itself during interspecies combat resulted in similar evolutionary solutions.

And what formidable solutions they were. Humans and other animals were not quick to mess with these creatures at least not without a plan.

Though no match for the Glyptodon’s strength and size, Humans were able to outsmart these animals and sometimes hunt them.

Although their backs and tails were strong and sturdy, their underbellies were soft. If a hunting group could turn a Glyptodon over onto its back, they could throw sharp spears at the animal’s underside to kill it. That is, if they avoided the spiked tail and if they prevented the creature from curling into the world’s largest medicine ball.

Yes, these creatures were so large that the shells of the dead could serve as makeshift shelters for early Humans. Imagine our ancestors huddling under a Giant Armadillo shell during intense tropical rainstorms or fierce blizzards.

Ultimately hunting is what likely led to Glyptodon downfall. Scientists believe that the last Glyptodons died out shortly after the last Ice Age because of overhunting by Humans and change in the climate.

Have a healthy week, Keep the Faith!

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Paul Ebeling

Paul A. Ebeling, a polymath, excels, in diverse fields of knowledge Including Pattern Recognition Analysis in Equities, Commodities and Foreign Exchange, and he is the author of "The Red Roadmaster's Technical Report on the US Major Market Indices, a highly regarded, weekly financial market commentary. He is a philosopher, issuing insights on a wide range of subjects to over a million cohorts. An international audience of opinion makers, business leaders, and global organizations recognize Ebeling as an expert.