Question 1

How do you say Ornitholestes?

Accepted Answer

You say it like this: or-NITH-oh-LES-teez. Break it into four chunks: OR, then NITH, then oh, then LEEZ at the end with a soft z sound. The trick is to put the stress on the NITH part and then again on LEEZ. Once you say it a couple of times out loud it starts to feel natural, and it is a seriously impressive word to drop at school.

Question 2

What does Ornitholestes mean?

Accepted Answer

Ornitholestes means bird robber or bird thief. The name comes from two Ancient Greek words: ornis, meaning bird, and lestes, meaning robber or thief. Paleontologist Henry Fairfield Osborn picked this name in 1903 because he pictured this fast little dinosaur darting through Jurassic forests and stealing birds right out of the air. It is one of the most dramatic and fitting dinosaur names ever chosen.

Question 3

How big was Ornitholestes?

Accepted Answer

Ornitholestes was about 6.5 feet long, which is roughly 2 meters, and it weighed around 26 pounds or about 12 kilograms. That makes it about the size of a large turkey but built much more like a sleek sprinter. It was one of the smallest predators sharing the Morrison Formation with giants like Allosaurus and Brachiosaurus, which must have made life both exciting and very dangerous.

Question 4

What did Ornitholestes eat?

Accepted Answer

Ornitholestes was a carnivore that most likely ate small lizards, early mammals, large insects, and possibly some of the earliest bird-like creatures. Its name literally means bird thief, so scientists have long debated whether it was fast enough to actually catch proto-birds or gliding animals. Its sharp curved claws and grasping three-fingered hands were well suited for snatching small agile prey. It was probably an opportunistic hunter that ate whatever small animal it could catch.

Question 5

Did Ornitholestes have feathers?

Accepted Answer

No feather impressions have ever been found from Ornitholestes, but many scientists think it likely had some feathers or feather-like filaments. This is because Ornitholestes belongs to Coelurosauria, the broad dinosaur group that includes all confirmed feathered dinosaurs and eventually birds themselves. Close relatives of Ornitholestes from similar time periods and regions have shown feather evidence in the fossil record. Until a specimen with preserved skin or feathers is found, we cannot say for certain either way.

Question 6

Did Ornitholestes really have a horn on its nose?

Accepted Answer

No, and this is one of paleontology's most famous correction stories. For decades, books and museum displays showed Ornitholestes with a small bump or horn on its snout, which looked pretty cool but turned out to be completely wrong. When scientists took a closer look at the only known skull, they realized the bump was just a section of nasal bone that had been crushed and distorted during millions of years of fossilization. The real Ornitholestes had a smooth, clean snout.

Question 7

When did Ornitholestes live?

Accepted Answer

Ornitholestes lived during the Late Jurassic period, roughly 152 to 143 million years ago. That puts it in the same time and place as some of the most famous dinosaurs ever discovered, including Brachiosaurus, Diplodocus, Stegosaurus, and Allosaurus. All of these animals shared the same Morrison Formation ecosystem in what is now the western United States. Ornitholestes appeared just a few million years after the first true birds were evolving, which makes its bird-thief name even more interesting.

Question 8

Who discovered Ornitholestes?

Accepted Answer

The fossil was collected in 1900 from Bone Cabin Quarry near Como Bluff in Wyoming by a team from the American Museum of Natural History. Henry Fairfield Osborn, one of the most famous paleontologists of his era, formally named and described the dinosaur in 1903. The species name hermanni honors Adam Hermann, the skilled fossil preparator who carefully cleaned and freed the bones from the surrounding rock so scientists could study them properly. Osborn is also famous for naming Tyrannosaurus rex just two years later in 1905.

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