If you think science is all lab coats, pocket protectors, and people calmly discussing theories over tea, allow us to introduce you to the Bone Wars—the gloriously petty, explosively dramatic dinosaur feud between two men who turned paleontology into a full-contact sport. Imagine if Jurassic Park were directed by the writers of Real Housewives and set in the Wild West, and you’re almost there.

Setting the Scene: America Digs Dinosaurs (and the Drama)

It’s the late 1800s, and the American West is full of two things: dinosaurs waiting patiently underground and scientists desperate to name them after themselves. The transcontinental railroad has just made it easier for gentlemen scholars in top hats to descend upon fossil-rich states like Colorado and Wyoming, pick up shovels, and start making history—or at least headlines.

This was the golden age of fossil frenzy, when bones were worth more than gold (in terms of academic bragging rights), and dinosaurs were being discovered faster than scientists could misassemble them. Enter our two main characters, who did for paleontology what Godzilla did for Tokyo: left a fascinating legacy and a massive mess.

Editor’s Note: If you are interested in going after living dinosaurs, rather than their bones, be sure to get a Dinosaur Hunting License, available in Verneal, Utah.

Marsh vs. Cope: Men Who Turned Science Into a Cage Match

Othniel Charles Marsh was a Yale professor with serious government connections and a beard that wasn’t just facial hair—it was a geological formation in its own right. Dense, authoritative, and perfectly sculpted, Marsh’s beard looked like it could carbon-date fossils on sight. If beards conferred wisdom, his could’ve written textbooks. It lent him an air of gravitas even when he was penning petty takedowns of rival paleontologists or sabotaging fossil digs.  He was calculating, methodical, and possibly allergic to fun. His preferred battle tactic? Accusing his arch-nemesis, Edward Drinker Cope, of scientific fraud and writing letters to Congress. Nothing says “I’m winning this fight” quite like bureaucratic paperwork.

Edward Drinker Cope was what you’d get if you crossed a brilliant scientist with a caffeine-fueled raccoon who hadn’t slept in a week. A wiry, sharp-featured man with an ever-intense glint in his eye, Cope carried himself like he was always one fossil away from proving a point—usually to Marsh. Where Marsh exuded slow, bureaucratic menace, Cope radiated manic energy, like a man trying to outrun both his rival and the limits of human publishing capacity.

Cope was a publishing machine. He once published 76 papers in a single year, which sounds impressive until you realize he sometimes misidentified fossils as different species just to beat his rival to the punch. To his admirers, he was a genius ahead of his time. To his critics (read: Marsh), he was a reckless showman with a grudge and a bone saw. Either way, Cope made sure no one ever forgot his name—preferably because he’d already named a dinosaur after himself. (Read Cope’s papers at the Biodiversity Heritage Library.)

How It All Went Fossil-Face First

Things started out civilly enough. In fact, Cope and Marsh were initially friends. But the bromance imploded in 1872, when Marsh sneakily bribed workers at one of Cope’s dig sites to send new fossil finds to him instead. That’s the paleontological equivalent of stealing someone’s lunch and writing your name on the Tupperware.

Cope retaliated by pointing out that Marsh had misidentified some fossils—and, in a delightfully petty twist, published a catalog of Marsh’s mistakes. Marsh fired back with a smear campaign that was uglier than mornings at Phyllis Diller’s house. The academic journals were soon clogged with insults, accusations, and increasingly suspect claims about who found what, when, and how much dynamite was involved.

Tactics of Mass Distraction (and Destruction)

Sabotage was the name of the game—and Marsh and Cope played it like it was an Olympic sport. At times, it seemed like they were less interested in discovering dinosaurs than in discovering new ways to make each other’s lives miserable. Forget scientific integrity; this was full-contact academia with a dash of espionage. Fossil dig sites became battlegrounds. Marsh bribed quarry workers to redirect valuable finds to him, while Cope responded by planting his own men like undercover agents, ready to intercept shipments or feed misinformation. It was less Indiana Jones and more Cold War meets Jurassic dirt pit.

And when all else failed? They went full scorched-earth—literally. On more than one occasion, rather than allow a rival to get his hands on a promising cache of fossils, the finder would dynamite the entire site. That’s right: fossils that had survived 150 million years of tectonics, erosion, and time itself were destroyed because one paleontologist didn’t want the other to publish first. This, ladies and gentlemen, is Science: the WWE Edition!

Both men also made liberal use of the press, flooding journals with rapid-fire species announcements—often rushed, poorly described, and, let’s be honest, probably made up on the spot. If either of them had invented a dinosaur called Cope-haterosaurus, no one would’ve blinked. Their published papers often came with footnotes that read more like courtroom depositions than peer-reviewed scholarship, loaded with not-so-subtle jabs and pointed corrections of the other’s “mistakes.” (Or as Marsh might call them, “Cope-isms.”)

It got so bad that other scientists began quietly backing away from the field altogether, preferring to dig up plants or trilobites—anything that didn’t come with angry telegrams and the possibility of detonation. In the end, both men left behind legacies in science and craters in professionalism. But if you’re looking for the wildest chapter in the history of paleontology, this was it: the era when fossils were power, reputations were fragile, and dynamite was just another excavation tool.

The Dinosaurs That Survived the Drama

Despite—or perhaps because of—the chaos, the Bone Wars gave us some of the most iconic prehistoric celebrities, including Triceratops, Stegosaurus, Apatosaurus, and Diplodocus.

The sheer volume of fossils discovered during this period—over 130 species—pushed paleontology decades forward. But scientists ever since have had to clean up the naming mess left behind by these two ego-driven fossil fiends.

One such mess involved the infamous Brontosaurus, who got caught in the crossfire and was banished from science textbooks for nearly a century before making a comeback. The confusion began when Marsh, in his rush to out-dino Cope, named a new sauropod Brontosaurus excelsus in 1879. Unfortunately, it turned out he’d already named a nearly identical dinosaur two years earlier: Apatosaurus ajax. According to the rules of scientific naming (which are apparently stricter than the IRS), the first name takes precedence, and Brontosaurus was demoted to a nickname. For over a century, it was considered a mistaken identity—until 2015, when a massive study argued that Brontosaurus was just different enough to reclaim its genus status. So now it’s officially back, and every museum gift shop dinosaur mug from the 1980s is breathing a sigh of vindicated relief.

The Naming Game: Marsh’s Dinosaur Monopoly

Say what you will about Othniel Charles Marsh—ruthless rival, bureaucratic saboteur, wearer of an impressive beard that may have had its own zip code—but the man knew how to name a dinosaur. And boy, did he. If you’ve ever strolled through a natural history museum and found yourself surrounded by creatures ending in -saurus, odds are you’ve wandered into Marsh’s naming hall of fame.

During the peak of the Bone Wars, Marsh was less a paleontologist and more a one-man branding agency for the Mesozoic Era. He didn’t just dig up fossils—he slapped names on them like a kid at a label maker convention. Here’s a sampling of dino genera he proudly named, many of which are still stomping around scientific literature today:

• Allosaurus (1877)
• Apatosaurus (1877)
• Brontosaurus (1879) — yes, the big guy’s back!
• Diplodocus (1878)
• Stegosaurus (1877)
• Triceratops (1889)
• Camptosaurus (1885)
• Ceratops (1888)
• Ceratosaurus (1884)
• Nodosaurus (1889)
• Ornithomimus (1890)

Oh, and that’s just a taste. Marsh named more than two dozen additional dinosaur genera, from the graceful Dryosaurus to the adorably tiny Nanosaurus, and even the very punk-sounding Creosaurus.

But Marsh didn’t stop at genera. He was all about that taxonomic power. He defined entire suborders, like Ceratopsia (1890), Theropoda (1881), and Stegosauria (1877), among others. That’s right: whole chunks of the dinosaur family tree owe their names to Marsh’s enthusiastic labeling habit. If dinosaur taxonomy were a game of Monopoly, Marsh would’ve owned Boardwalk, Park Place, and most of the orange properties, too.

And then there were the families—Allosauridae, Ceratopsidae, Diplodocidae, Stegosauridae, and more—each one given a name by Marsh, probably while Cope was still trying to find a pencil. Some species were so iconic, they got fancy Latin surnames courtesy of Marsh: Allosaurus fragilis, Stegosaurus stenops, Triceratops horridus, and—because he knew how to go big—Brontosaurus excelsus.

Marsh may have named Stegosaurus, but he also saddled it with some long-standing myths—like the claim that it had a brain the size of a walnut and a bonus brain in its butt. If you were taught those “facts” in school, we hate to be the ones to break it to you (and your science teacher), but… not quite. And by “not quite,” we mean “about as accurate as using a banana as a slide rule.” The truth? Stegosaurus did have a small brain for its size—roughly 2.5 to 3 ounces—but that was pretty much the norm for critters of that class. As for the alleged backup brain in its rump? That was likely a glycogen body, not a second command center. So no, it wasn’t rocking a two-brain setup like some prehistoric overachiever. Just one brain—small, but sufficient for a dinosaur with more armor than ambition.

Of course, when you name that many dinosaurs, eventually the dinosaurs (or at least your fellow scientists) start naming things after you. Marsh was immortalized by several species not of his own making, including Hoplitosaurus marshi (Lucas, 1901), Marshosaurus (Madsen, 1976), and Othnielosaurus (Galton, 2007). We assume Othnielosaurus was particularly grumpy and liked to file complaints with Congress.

Whether or not you loved him, feared him, or spent your academic career dodging his accusations (looking at you, Cope), one thing’s clear: Marsh knew how to make names stick. His fingerprints are all over the prehistoric world—proof that sometimes, the pen really is mightier than the pickaxe.

Cope’s Contributions: Speed, Sass, and So Many Dinosaurs

If O.C. Marsh was the methodical chess player of paleontology, then Edward Drinker Cope was the guy slamming pieces around while yelling “Checkmate!” every three moves. A self-taught genius, Cope was equal parts brilliant and chaotic, the sort of scientist who could publish a groundbreaking discovery and a glaring error in the same paragraph—and then argue it was your fault for not reading it fast enough.

Cope approached fossil discovery like he was in a footrace with extinction itself. While Marsh took his time and leveraged his government connections, Cope relied on sheer speed, intuition, and a near-pathological refusal to admit when he was wrong. Case in point: when he famously reconstructed an Elasmosaurus with the head on the tail end, he tried to buy up every copy of the journal it appeared in so no one would notice. Spoiler: people noticed.

Despite the occasional anatomical hiccup, Cope made serious contributions to science. He described and named over 1,000 vertebrate species, many of them dinosaurs, and published more than 1,200 scientific papers—and he didn’t even have the assistance of a cat to help write the papers. His fossil finds were often made during whirlwind trips to the American West, where he excavated like a man whose train was leaving in 30 minutes and whose rival was already on board.

Among the dinosaurs Cope named and described were:

• Monoclonius – one of the earliest horned dinosaurs described
• Coelophysis – a slender, bipedal carnivore and one of the first theropods found in large numbers
• Dimetrodon – okay, not technically a dinosaur¹, but try telling that to every museum gift shop
• Laelaps – later renamed Dryptosaurus after it turned out the name was already taken (awkward)
• Camptosaurus – simultaneously claimed by both Cope and Marsh in one of paleontology’s first copyright wars

Cope also coined the term Cope’s Rule, which proposes that animal lineages tend to get larger over time. Ironically, this applies to both dinosaurs and the size of his feud with Marsh.

And yes, like Marsh, Cope earned some honorary mentions in dino-naming history. Among the prehistoric shout-outs:

• Drinker (Smith et al., 1985) – a small herbivorous dinosaur named after his middle name, because apparently “Edwardosaurus” didn’t have the same flair
• Copeoglossum – a genus of skinks that are much smaller and less bitey than most of Cope’s other discoveries
• Copeia – the scientific journal of the American Society of Ichthyologists and Herpetologists, now published under the less-catchy name Ichthyology & Herpetology.

In the end, Cope’s fossil legacy is as messy, glorious, and prolific as the man himself. He may have raced through taxonomy like it was a speed-eating contest, but the sheer volume of what he unearthed helped lay the foundation of American paleontology. He may not have always gotten it right the first time (or the second), but Edward Drinker Cope left behind a fossil record that, much like his personality, refuses to be ignored.

Mutually Assured Disgrace

In the end, neither man truly won. Marsh died in debt despite having a cushy gig at the U.S. Geological Survey. Cope tried to immortalize himself by donating his skeleton to science, with instructions to measure his skull and prove his brain was bigger than Marsh’s. That’s not a joke—we wish it were. Marsh declined, possibly because his ego wouldn’t fit in the box.

Both were largely discredited by the end of their lives, but their work—flawed and frenzied though it was—laid the foundation for modern paleontology. Just… maybe not the way they intended.

It Wasn’t All Dynamite and Drama

As much fun as it is to roast Marsh and Cope for acting like fossil-fueled toddlers in a perpetual tantrum, it’s only fair to point out that they did, in fact, get some actual science done. And by “some,” we mean an astonishing amount. Together, these two discovered and cataloged over 25,000 fossil specimens. That’s not a typo. That’s a career output that makes the rest of us feel lazy just reading it.

In terms of species, Cope described 1,115 of the 3,200 known vertebrate fossil species at the time—about a third of everything with a spine that had ever been dug up. Marsh, by comparison, wasn’t exactly slacking either, with 496 species to his name. So yes, while they spent a decade-and-a-half trying to bury each other’s reputations, they also unburied a good chunk of what we now know about prehistoric life.

The Bone Wars may have been one long, slow-motion trainwreck of professional ethics, but it also supercharged the field of paleontology. Their rivalry pushed both men to work faster, dig deeper, and publish more prolifically than they likely would have alone. In the end, science was richer for their efforts—though probably a little deaf from all the shouting.

Legacy: From Tantrums to Tyrannosaurs

The Bone Wars prove that scientific progress doesn’t always come from careful collaboration and peer review. Sometimes, it comes from two grown men acting like children, screaming “MINE!” over hunks of fossilized femur.

Today, their rivalry is taught as a cautionary tale in paleontology classes—and possibly in anger management courses. But their discoveries still grace museum halls around the world, silently reminding us that beneath every noble scientific pursuit lies the potential for an epic nerd fight of prehistoric proportions.

1. Contrary to every elementary school mural and toy box from the 1980s, Dimetrodon is not a dinosaur. We know—it has that cool sail, those pointy teeth, and it just feels dinosaur-ish. But scientifically speaking, it’s about as much a dinosaur as a modern housecat. Dimetrodon actually lived tens of millions of years before the first true dinosaurs appeared. It belonged to a group called synapsids—a lineage that would eventually lead to mammals. Yep, this sail-backed predator is more closely related to you than it is to Triceratops. So while it looks like it crashed the Mesozoic party, Dimetrodon was actually more of a Permian-era trendsetter, stomping around 40 million years before the first dino RSVP’d to existence.
   
   And while we’re on the subject, if accuracy had been a priority, Jurassic Park would’ve been called Cretaceous Park. We get it—“Cretaceous” doesn’t quite roll off the tongue with the same blockbuster flair, and nobody wants to see a movie trailer shouting, “Welcome… to Albian-Stage-Themed Zoological Containment Facility!” But here’s the thing: most of the dinosaurs featured in the film—like Tyrannosaurus rex, Triceratops, and Velociraptor—actually lived during the Late Cretaceous period, around 66–75 million years ago. The Jurassic period ended about 50 million years before that. So while the park may have had fantastic animatronic realism and suspiciously fast raptors, the name was more marketing than Mesozoic science. Still, we’ll admit—Cretaceous Park doesn’t quite have the same thunderous John Williams theme song potential. ↩︎

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