Imagine this: A forgotten fossil, gathering dust in a museum for over a century, turns out to be a completely new species of giant dinosaur! Intrigued? Let's dive in.
This incredible discovery revolves around a fossilized skull, now identified as belonging to a previously unknown dinosaur. This remarkable creature, named Athenar bermani, roamed the Earth during the Late Jurassic period, specifically in what is now eastern Utah. This prehistoric giant lived in the Morrison Formation, a vast geological area spanning across the western United States.
The fossil itself has a fascinating history. It was originally unearthed back in 1913 at the Carnegie Quarry within Dinosaur National Monument. For decades, it resided at the Carnegie Museum of Natural History in Pittsburgh, Pennsylvania. But here's where it gets controversial: The fossil was initially misidentified. Researchers had thought it belonged to a Diplodocus, a well-known long-necked dinosaur. However, a recent study, spearheaded by Dr. John A. Whitlock, a paleontologist from Mount Aloysius College and the Carnegie Museum of Natural History, revealed the truth.
Through meticulous examination and comparison with other dinosaur skulls, Dr. Whitlock and his team found that the fossil didn't align with Diplodocus. Instead, it showed a unique combination of traits, leading to its classification as a new species of sauropod, a group known for their long necks. And this is the part most people miss: Athenar bermani belongs to the dicraeosaurid family, a group of smaller sauropods with shorter necks and distinctive tall spines on their backs. This contrasts sharply with the more familiar giants like Diplodocus and Apatosaurus.
The name Athenar bermani pays homage to both a musician and the earlier researchers who studied similar fossils. One particularly striking feature that sets Athenar apart is a tiny bony tooth found along a skull suture at the back of its head. The braincase also revealed unique features, including openings in the bone roof and a hook-shaped prong on the squamosal bone, near the jaw joint.
But why are dicraeosaurids so interesting? They were once believed to be primarily located in South America and parts of Africa. The discovery of Athenar bermani provides a solid North American representative, indicating that these smaller sauropods were more widespread during the Late Jurassic than previously thought. The skull features help paleontologists understand how certain bone structures changed as dicraeosaurids spread across different regions, potentially revealing insights into their diets, habitats, and even their posture.
Did you know? The age of the rock layer where Athenar bermani was found is estimated to be around 151 to 150 million years ago, according to magnetostratigraphy, a method that uses magnetic reversals to date rock layers. This makes Athenar one of the last long-necked dinosaurs known from this area of the Morrison Formation. During this time, the region was a low-lying landscape with rivers, floodplains, and forests, home to various plant-eating dinosaurs like Apatosaurus and Stegosaurus, as well as meat-eating theropods like Allosaurus.
Even though Athenar bermani is known only from a single skull piece, this limited fossil still provides valuable clues. It shows how nerves and blood vessels ran through the head and how the skull compares to those of its relatives. This discovery highlights the importance of reexamining existing museum collections. Many specimens were named or labeled when fewer dinosaurs were known, and modern comparative tools were limited. Now, with advanced techniques, these older fossils can become fresh sources of data.
So, what do you think? Does this discovery change your understanding of dinosaur diversity? Are you surprised that a fossil could be misidentified for so long? Share your thoughts in the comments below!
