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10 Things You Might Not Know About Triceratops

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Dinosaurs are still with us. They’ve stomped, chomped, and roared their way into our movies, our museums, and our imaginations. So let’s get ready to dig a little deeper. Today, we’re taking a closer look at everyone’s favorite three-horned herbivore, Triceratops. 

1. It’s the Official State Fossil of South Dakota

And lest anyone fear that Triceratops is still underappreciated, the creature is also Wyoming’s “State Dinosaur” (and, yes, that’s a separate category).

2. Those Distinctive Horns Changed Shape with Age

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Scientists have found that baby Triceratops had short, stubby horns. Over time, these began curving backward before pointing in the opposite direction and assuming their familiar form once their owner hit adulthood. Skip to the 12:10-mark in this awesome TED talk for more details:

3. Triceratops Duels Could Get Rather Nasty

These beasties had a knack for collecting battle scars—in a few very specific locations! Distinctive wounds are often found near the eye sockets and the base of the frills in Triceratops skulls. Why there? According to research conducted in 2009, the injuries were likely caused by adults locking their horns in combat.

4. T. rex Couldn’t Resist Nibbling on Triceratops Faces

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Thanks to some tell-tale bite marks, we know that not only would a hungry Tyrannosaurus sink its teeth into the occasional hunk of Triceratops, but the predator would frequently target its delicate facial tissue in the process (though less-meaty regions of the skull were largely ignored).

5. The Price of a Decent Triceratops Skull has Gone Through the Roof

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Not even dinosaurs are inflation-proof. In 1997, the average Triceratops skull (harvested by fossil collectors) cost roughly $2500. Nowadays, museums and private dinosaur-fanciers alike generally have to shell out well over ten times as much to get their hands on one!

6. Triceratops Had Good Posture

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Old paintings depict Triceratops’ front legs sprawling out to the side, similar to those of a modern crocodile. However, a re-analysis of its elbow joint showed that the beast maintained an upright, rhinoceros-like gait instead.

7. Triceratops Was Originally Mistaken for an Overgrown Bison

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During the American Gilded Age, paleontologist Othneil Charles Marsh received a pair of fossilized horn fragments which he thought belonged to a giant, prehistoric bovine. But subsequent discoveries from the area convinced him that what he’d found was, in fact, a dinosaur, which Marsh eventually named “Triceratops” (meaning “Three-Horned Face”). 

8. In 1889, Somebody Actually Tried Lassoing A Triceratops.

While exploring the badlands of Wyoming, one of Marsh’s associates—a brilliant scientist named John Bell Hatcher—was approached by a rancher who’d spotted a huge, mysterious skull on his property. It turned out to have been one of the very first Triceratops specimens ever discovered. Oblivious to its significance, the cattleman attempted to haul off his treasure by throwing a lasso over one of its horns … which promptly snapped off.

9. Triceratops’ Head Was Nearly One-Third the Length of Its Body

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No doubt about it: Triceratops had one heck of a noggin, which could stretch 2.5 meters (8.2 feet) from end to end. By comparison, the critter’s entire body reached a total length of around 8 meters (26.25 feet).

10. Its Name Was Wrongly Pronounced “Dead” By the Media

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Let the record show—once and for all—that while Triceratops may be extinct, its scientific name isn’t going anywhere. Why bring this up? For several years, the press has been erroneously claiming that Triceratops Never Existed.

The confusion began in 2010, when paleontologist Jack Horner co-authored a paper in which he argued that Triceratops and Torosaurus (a related dino) were really one and the same. No organism can (academically) go by two monikers, so, if Horner turns out to have been right, one of these titles would have to be discarded. But, have no fear, fellow fossil nerds! The more recognizable name was coined two years earlier and, hence, has seniority. So, we might lose Torosaurus, but we’ll still have Triceratops! 

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iStock // Ekaterina Minaeva
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Man Buys Two Metric Tons of LEGO Bricks; Sorts Them Via Machine Learning
May 21, 2017
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iStock // Ekaterina Minaeva

Jacques Mattheij made a small, but awesome, mistake. He went on eBay one evening and bid on a bunch of bulk LEGO brick auctions, then went to sleep. Upon waking, he discovered that he was the high bidder on many, and was now the proud owner of two tons of LEGO bricks. (This is about 4400 pounds.) He wrote, "[L]esson 1: if you win almost all bids you are bidding too high."

Mattheij had noticed that bulk, unsorted bricks sell for something like €10/kilogram, whereas sets are roughly €40/kg and rare parts go for up to €100/kg. Much of the value of the bricks is in their sorting. If he could reduce the entropy of these bins of unsorted bricks, he could make a tidy profit. While many people do this work by hand, the problem is enormous—just the kind of challenge for a computer. Mattheij writes:

There are 38000+ shapes and there are 100+ possible shades of color (you can roughly tell how old someone is by asking them what lego colors they remember from their youth).

In the following months, Mattheij built a proof-of-concept sorting system using, of course, LEGO. He broke the problem down into a series of sub-problems (including "feeding LEGO reliably from a hopper is surprisingly hard," one of those facts of nature that will stymie even the best system design). After tinkering with the prototype at length, he expanded the system to a surprisingly complex system of conveyer belts (powered by a home treadmill), various pieces of cabinetry, and "copious quantities of crazy glue."

Here's a video showing the current system running at low speed:

The key part of the system was running the bricks past a camera paired with a computer running a neural net-based image classifier. That allows the computer (when sufficiently trained on brick images) to recognize bricks and thus categorize them by color, shape, or other parameters. Remember that as bricks pass by, they can be in any orientation, can be dirty, can even be stuck to other pieces. So having a flexible software system is key to recognizing—in a fraction of a second—what a given brick is, in order to sort it out. When a match is found, a jet of compressed air pops the piece off the conveyer belt and into a waiting bin.

After much experimentation, Mattheij rewrote the software (several times in fact) to accomplish a variety of basic tasks. At its core, the system takes images from a webcam and feeds them to a neural network to do the classification. Of course, the neural net needs to be "trained" by showing it lots of images, and telling it what those images represent. Mattheij's breakthrough was allowing the machine to effectively train itself, with guidance: Running pieces through allows the system to take its own photos, make a guess, and build on that guess. As long as Mattheij corrects the incorrect guesses, he ends up with a decent (and self-reinforcing) corpus of training data. As the machine continues running, it can rack up more training, allowing it to recognize a broad variety of pieces on the fly.

Here's another video, focusing on how the pieces move on conveyer belts (running at slow speed so puny humans can follow). You can also see the air jets in action:

In an email interview, Mattheij told Mental Floss that the system currently sorts LEGO bricks into more than 50 categories. It can also be run in a color-sorting mode to bin the parts across 12 color groups. (Thus at present you'd likely do a two-pass sort on the bricks: once for shape, then a separate pass for color.) He continues to refine the system, with a focus on making its recognition abilities faster. At some point down the line, he plans to make the software portion open source. You're on your own as far as building conveyer belts, bins, and so forth.

Check out Mattheij's writeup in two parts for more information. It starts with an overview of the story, followed up with a deep dive on the software. He's also tweeting about the project (among other things). And if you look around a bit, you'll find bulk LEGO brick auctions online—it's definitely a thing!

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Opening Ceremony
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These $425 Jeans Can Turn Into Jorts
May 19, 2017
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Opening Ceremony

Modular clothing used to consist of something simple, like a reversible jacket. Today, it’s a $425 pair of detachable jeans.

Apparel retailer Opening Ceremony recently debuted a pair of “2 in 1 Y/Project” trousers that look fairly peculiar. The legs are held to the crotch by a pair of loops, creating a disjointed C-3PO effect. Undo the loops and you can now remove the legs entirely, leaving a pair of jean shorts in their wake. The result goes from this:

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Opening Ceremony

To this:

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Opening Ceremony

The company also offers a slightly different cut with button tabs in black for $460. If these aren’t audacious enough for you, the Y/Project line includes jumpsuits with removable legs and garter-equipped jeans.

[h/t Mashable]

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