How Horses Took Over North America (Twice)
How Horses Took Over North America Twice

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The PBSDS Annual Audience Survey: The ancestors of modern horses became so successful that they spread all over the world, to Europe, Asia, South America, and Africa. But in their native range of North America, they’ll vanish for 10,000 years. Until another strange mammal brings them back. The illustration of Equus Simplicidens--also known as the Hagerman Horse--is by Roger Hall. You can check out more of Roger's work at Produced in collaboration with PBS Digital Studios: Super special thanks to the following Patreon patrons for helping make Eons possible: Katie Fichtner, Aldo Espinosa Zúñiga, Kelby Reid, Steph Summerfield, Todd Dittman, Betsy Radley, Svetlana Pylaeva, Colin Sylvester, Philip Slingerland, John Vanek, Jose Garcia, Noah offitzer, Eric Vonk, Tony Wamsley, Henrik Peteri, Jonathan Wright, Wilco Verweij, Jon Monteiro, James Bording, Brad Nicholls, Miles Chaston, Michael McClellan, Elysha Nygård, Jeff Graham, Maria Humphrey, Nathan Paskett, Connor Jensen, Ehit Dinesh Agarwal, Sapjes, Daisuke Goto, Zachary Winkler, Hubert Rady, Yuntao Zhou, Gregory Kintz, Tyson Cleary, Chandler Bass, Maly Lor, Joao Ascensao, Tsee Lee, Sarah Fritts, Ruben Winter, Ron Harvey Jr, Joshua Mitchell, Johnny Li, Jacob Gerke, Katie M Vasilescu, Brandon Burke, Alex Yan If you'd like to support the channel, head over to and pledge for some cool rewards! Want to follow Eons elsewhere on the internet? Facebook - Twitter - Instagram - References: Fossil Horses by Bruce J. MacFadden


Cptjockitch : Now do cows please

The Armadilliest One : Real horse fans remember when Eohippus was around

Copper389 : Hearing a hoof described as “one giant toe” made me more uncomfortable than I expected

jonny pepperston : Why did the eohippus have a sore throat? Because it was just a little horse

Bradipo Panzuto : this... explains a lot. i've always heard the apparently contradicting statements "colonizers brought horses to north america" and "horses were native to north america's large grassy fields" and i've always been so confused... which one is true?? both of them, apparently

logan cintron : I'd like to see a video on how birds like ostriches and penguins went back to being flightless and why it was necessary.

Rembrandt : Next on PBS EONS: How my Biceps Shredded My Shirt! 😂😂😂😂

coolsub 20D : So are we gonna act like this man isn’t gettin swole? Dude peep the gains man😂💪🏽

Jetlite : _"Chewie, we are home"_ -First horses on being brought back to North America by the Spanish (1525)

DanBrohare : This is by far, one of the best produced, well written and most entertaining channels on youtube.

James Vargas : Please do a video on the evolution of the australian animals!! Especially platypus. Thanks!!

Cities & Skyscrapers : Your channel is absolutely awesome! Keep it up!

OnlineDater69 : Seen a ton of wild horses in Wyoming basin on my CDT hiking trip. They are majestic af!

BH Productions : please make a video on areas that have been isolated to their own evolution. like Madagascar!

PF Sosa : Love your channel! Can I suggest a video about cactii? I'm curious about how they relate to other plants, but I fear that maybe there are not a lot of fossil evidence about them :(

SpaceKrakenKazoo : How differently would civilization have arisen if the horse had stayed and succeeded? The Old world would have never had chariots and the Mongol empire would never have existed. How many wars were won on the backs of the horse? The Romans? Would the Native Americans have domesticated the horse, or not? Would their societies growth have been expedited? I AM SO CURIOUS!

João Philippe Lima : I think the Great American Interchange deserves a full episode. And why not one about the much bigger Columbian Interchange?

Nick Hentschel : I've long favored the horse (esp. the Mustang) as the mascot of America, rather than the bald eagle or even the wild turkey: it's a perfect symbol of the New World and the Old coming together to create something new and better.

skoockum : Rhinos and tapirs and horses. Oh my.

Magnus Peacock : I appreciate the pronunciation of "niche"

Niclas Dahl Aabo : The evolution of dogs/wolves would also be pretty interesting. Maybe a video on different domesticated animals and their evolution.

Alexandra Lee : As someone who used to read about this all the time as a young horse obsessed girl, I'm very disappointed to find out that it isn't pronounced "merry-chip-us". 9 year old me is quaking.

2030games : Great episode, and I took the survey; I hope it helps!

Vennom Scandi : horses are cool more such videos about how a certain species we know today came to be pls

Arya Pourtabatabaie : 0:16 “Eohippus may be small just a half meter tall; but it’s also fast and well adapted to grass...” Sick rhyme Blake! Keep it up.

Mason Cafua : You know as soon as the first horses landed in North America one of them had like a Deja Vu moment and was thinkin like "this seems oddly familiar, have we been here before"

12ze34 : 1st horse in the Americas: "-Feels just like Home!"

Cody Gavin : You should make a video about the "Great American Biotic Interchange."

Jack Bugden : 7:59 What about Przewalski's wild horses?

estothecee : Another fantastic video! I've already said this on a previous video, but, the quality of the content on this channel is incredible! Keep it up guys, by far my favourite paleo themed channel on Youtube. I would definitely appreciate an in-depth video on Dilophosaurus, and other members of its family, if you have the time please. Thanks.

Joey S : I drop everything i'm doing when I get a notification from this channel, I don't know what you're doing and how you're doing it but I'm hooked. Ok now to watch the video

KendrixTermina : Wow, so horses we're originally from the Americas! I never knew! Sort of ironic how they got hunted/eaten by humans, and then some different humans brought them back.

Douggernaut84 : Never knew a horse’s hoof was a single toe !🤯

Francois Boonzaaier : Really fascinated. So horses are are a megafauna that came back to North America, unlike other megafauna like mammoths that died off completely.

yaddar : Make a video about Wolves (which we transformed into dogs) and also the origin of Cats

// з а л н и й // х о д // а н а : This channel is genuinely amazing. I get exited every time - crazy how often you upload considering the quality!

Bruno : Outstanding incredible content as always. Is a marvel being able to access this type of knowledge in this amazing way. THANK YOU for your incredible work!

The Creature : Aww yeah, more awesome stuff to learn, and at such great quality as well, tomorrow. It is, regrettably, way to late for me to watch this right now, but I'm sure that this will give me something to look forward to, as well as incentive to wake up early. Keep making this great content for a long time to come. I look forward to it.

Hanif Huzairi : So horses WERE from North America originally. I'd always wondered where they first rose.

Jeffrey Bernath : What's a Mesonyx? There were hoofed predators!? That's nuts, let's hear about them!

Historian's Beard : Love you guys. Keep teaching me!

Giraffinator : I never knew I wanted to know about horse evolution

Le Huy-Anh : * horses aren't actually Eurasian in origin, but came from the Americas, then later re-introduced?*

Matheus Castello : This channel is overall so high quality! Just wanted to say I’m a big fan of the content :)

chegeny : I love this show. Glyptodonts would be nice to see fleshed out. Also, I've always been curious about early vascular plants during the Silurian, maybe Cooksonia. Thanks!

jeremiah liberator : This was the most mind blowing episode yet!!!

Andrew : Who else saw TWICE and just clicked anyway.. lol

Potassuim_Cation : Those damn bison and their global warming

Rotsuoy : I love this channel and would love to support it by purchasing merch, but absolutely none of the items you have for sell appeal to me. They all feel very hipster and minimalist in style. The only shirt I'd buy, if I had no other options, would be the Stay Curious one, but even then, I don't really want to purchase a shirt I'll rarely wear. If you did some shirts with artwork similar to the posters you have for sell, I'd gladly buy them in a heartbeat. Also, you should put a link in the description of your videos so that people can find it easier!