Buzz
While most prehistoric creatures were downright frightening, we can count ourselves lucky that they vanished millions of years ago, leaving us with this amazing planet. However, not all of them were as terrifying as we think. At times, they traded fear for oddity and even goofiness.
10. Dinosaur Eggs Were Vibrantly Colored
Dinosaurs were far more colorful than we typically imagine from scary movies. You’ve likely heard about some dinosaurs sporting vibrant feathers, but new evidence shows that even their eggs were surprisingly beautiful and colorful.
For instance, Oviraptor eggs were a calming greenish-blue, as revealed by a 67-million-year-old clutch discovered in China. Most dinosaur eggs fossilized over time have turned dark due to minerals seeping into the shell, but these particular eggs remained light and almost unspoiled, allowing scientists to identify the pigments biliverdin and protoporphyrin. These are the same pigments that give the striking colors to the eggs of emus and cassowaries—two very ancient birds in evolutionary terms.
At first glance, one might think colorful eggs would be easy for predators to spot, but the opposite is true. Many dinosaurs laid their eggs in earthen, grassy nests, where white eggs would stick out like a sore thumb. However, greenish-blue eggs would have blended in perfectly, letting the mother dinosaurs leave their eggs well-hidden while they went off to grab a quick snack.
9. Archaeopteryx Had Feathery Pants
First uncovered in Germany in 1861, Archaeopteryx is a key species because it represents the evolutionary shift from dinosaurs to birds. With its teeth, claws, and beady eyes, it’s unmistakably a dinosaur, but its bird-like feathers clearly link it to modern birds.
For a long period, scientists weren’t certain whether Archaeopteryx had feathers covering its entire body or just its wings. However, a recently discovered, remarkably well-preserved fossil (out of 11 found so far) revealed feather tufts running down its legs. Thanks to its thick feather shafts, most scientists believe Archaeopteryx could fly, though the leg feathers would not have been crucial for flight. Instead, the feathers on its lower body likely served multiple purposes, such as insulation and camouflage.
It’s also possible that the pennate feathers evolved for display. The feathers found on Archaeopteryx’s body are symmetrical, which is impressive, but it’s actually asymmetrical feathers that are optimal for flight. Therefore, Archaeopteryx may have developed its feathers initially for attracting mates or communication, and these feathers were later adapted for aerodynamic purposes.
8. Atopodentatus Unicus Had Teeth Like a Vertical Zipper
The age of dinosaurs produced some truly strange and frightening mouths, but Atopodentatus unicus stands out. Its mouth was so peculiar that its name itself—Atopodentatus—roughly translates to “weird teeth.”
Measuring around 3 meters (9 ft) in length, Atopodentatus was equally adept on both land and sea. Lacking the hydrodynamic advantages of other aquatic creatures, Atopodentatus compensated with a mouth filled with sharp, needle-like teeth. What truly sets it apart, though, is that some of these needle-like teeth were positioned vertically in its grotesque mouth. Essentially, its jaw resembled a zipper.
Not one to follow the principle of 'less is more,' Atopodentatus also sported a typical set of teeth across its upper and lower jaws. In total, this terrifying marine reptile had about 400 hypodermic-like teeth spread over its multiple mandibles. Although this sounds menacing, scientists believe Atopodentatus was a bottom feeder, using its vertical teeth as a filtering screen instead of using them to terrorize smaller creatures.
7. The Crowned Triceratops
With three gigantic horns on its face and a shovel-like forehead, the triceratops is already one of the coolest dinosaurs. But the Cretaceous period took it a step further by producing the closely related Regaliceratops peterhewsi, affectionately dubbed “Hellboy” for the small horns above its eyes.
Regaliceratops means “royal horned face,” while its species name honors Peter Hews, the amateur fossil hunter who first uncovered its ancient remains. Hews made his accidental discovery when he spotted a horn protruding from a riverbank in Alberta, Canada. The specimen was airlifted to a museum, still trapped in its limestone casing, and scientists spent two and a half years meticulously uncovering it.
The regaliceratops is unusual for two main reasons. First, its horns are seemingly out of time. The triceratops typically had large brow horns and a smaller nose horn, but the regaliceratops had short brow horns and a large nose spike, similar to a different dinosaur lineage that went extinct two million years earlier. Second, its forehead shield wasn’t frilled, but had sharp extensions that gave it a crown-like look (hence its name).
6. Synapsids Redefine the Nocturnal Timeline
Around 300 million years ago, before dinosaurs even existed, Earth was alive with synapsids: early mammals that looked somewhat like lizards. These peculiar mammal ancestors roamed the planet 100 million years before the small, furry creatures that scurried beneath the noses of dinosaurs. According to their fossils, they were nocturnal.
Scientists typically determine if a species was active during the day or night by examining eye size. Larger eyes are a sign of nocturnal activity, while smaller eyes indicate daylight activity. While eyes themselves don’t usually survive fossilization, the bony rings around eye sockets offer clues about their size. The bony rings found around synapsid eyes suggest they were primarily nocturnal, which puzzled paleontologists.
Historically, it was believed that early mammals became nocturnal to avoid detection by dinosaurs. However, the nocturnal synapsids prove that this behavior evolved long before dinosaurs ever appeared. Even apex predator synapsids, like the massive, sail-backed dimetrodons, were nocturnal, implying that their nighttime habits weren’t developed as a defensive measure.
5. Rhinorex’s Enormous Nose
Rhinorex, which translates to something like “King of the Noses,” truly lives up to its name with Rhinorex condrupus. In an unexpected turn of events, paleontologists discovered its mostly complete skull tucked away in storage at Brigham Young University, where it had been mostly forgotten since the 1990s. After painstakingly chiseling it out of a block of limestone for two years—a task they compared to extracting a skull from a driveway—they were thrilled to realize they had uncovered an entirely new species.
Rhinorex condrupus belongs to the hadrosaur family, known for dinosaurs with prominent bony crests atop their heads. However, the rhinorex did away with the signature crest, replacing it with a truly legendary nose. This peculiar dinosaur, along with its crested relatives, lived in the ancient wilds of Utah around 75 million years ago, during the Cretaceous period. The Brigham Young specimen may have met its end at the jaws of a massive ancient crocodile.
The reason behind the rhinorex’s oversized nose remains a mystery, though it likely wasn’t for enhanced smelling. Rather than an olfactory advantage, the nose may have been a tool for attracting mates—because, as the saying goes, you know what they say about guys with big noses.
4. The Platypus of Dinosaurs
The T. rex has earned its place as a pop culture legend due to its terrifying nature. Its evolutionary relatives include some equally fearsome creatures—but also at least one quirky cousin who probably didn’t make it to many family reunions.
The Chilesaurus diegosuarezi is often called the platypus of dinosaurs, with scientists reacting to both with the same stunned disbelief. Just like its far-off Australian relative, the Chilesaurus’s strange body led some to believe it was a mix of different animals. From its pelvis to its limbs, and its fingers to its claws, nearly every part of its body could have easily been mistaken for a part from a different dinosaur.
Despite being closely related to the fearsome T. rex, the Chilesaurus was an herbivore. Its beak-like mouth looked far less menacing than the T. rex’s toothy snout. Also, this dinosaur was on the smaller side, growing to a maximum length of 3 meters (10 ft), making it about the size of your Thanksgiving centerpiece.
3. The Ancient Creature Smaller Than Its Own Sperm
Ostracods today are tiny crustaceans measuring around 1 millimeter (0.04 in) in length. These prolific creatures resemble whiskered plankton and one of their ancient ancestors had some truly extraordinary sperm.
By an unbelievable stroke of luck, researchers discovered a batch of sperm that’s 16 million years old, perfectly preserved within a female ostracod’s reproductive tract. Since soft tissues like sperm are incredibly fragile, finding a specimen this detailed and ancient is an exceptional rarity. The fact that these samples were preserved post-coitus only adds to their uniqueness.
The preserved sperm were strangely, even comically large, reaching lengths of up to 1 centimeter (0.4 in), which is far longer than the ostracod itself. It’s an uncommon phenomenon in nature for an animal to have sperm that surpasses its body size, though moths and fruit flies share this oddity. Unfortunately, scientists can’t quite explain why these unassuming animals have such giant gametes, but they are certainly amazed.
2. The Bat-Winged Early Bird
When paleontologists uncovered a creature from the mid-to-late Jurassic period and discovered it had wings, they were understandably thrilled. As one of the earliest known birds, the specimen, later named Yi qi, provided a fascinating peek into the evolution of modern birds.
However, to their surprise, the wings of Yi qi were drastically different from those of modern birds. While piecing together the partial skeleton discovered in China, scientists found a patch of preserved membrane stretched between its spindly fingers, suggesting that it had eerie, bat-like wings. Or perhaps wings similar to those of a flying squirrel, but definitely not the typical bird wings.
Although Yi qi did have feathers, they were apparently not in the places that mattered most. Its awkward wings lacked the aerodynamic advantages of feathered wings, and it likely couldn’t fly. Instead, it probably climbed trees using its claws, then glided short distances between branches with its odd membranous flaps.
1. The Earliest Snake Ancestor
Some species have undergone significant changes due to the relentless, slow pace of evolution. Others, at least on the surface, appear to have remained largely the same. The ancestor of all things snake-like, recently identified as having lived in the humid southern regions nearly 130 million years ago, looked strikingly similar to its modern-day relatives.
Except for its hind limbs, of course. Yes, ancient snakes boasted tiny, adorable legs that tapered into actual ankles and then branched out into distinct toes. The early snakes that followed were likely nocturnal and equipped with needle-like teeth, which they used to capture prey, swallowing it whole like modern snakes. It doesn’t seem that these early serpents used constriction like the boa, so that deadly technique must have evolved later.
Surprisingly, there’s still much to learn about snake evolution, and researchers knew even less before this study. To uncover the secrets of the legged serpent, scientists combined fossil evidence, anatomical insights, and a reconstruction of ancient snake behavior to piece together the mystery.
