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Diplodocus, Long Thought Exclusively American, Turns Up in Spain

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Diplodocus, Long Thought Exclusively American, Turns Up in Spain | Sci.News

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Diplodocus, Long Thought Exclusively American, Turns Up in Spain

Sep 14, 2026 by
Enrico de Lazaro

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Paleontologists from Fundación Dinópolis have identified the first confirmed fossils of the genus Diplodocus found outside North America.
The Spanish Diplodocus was a close relative of Diplodocus hallorum. Image credit: Carmelo López.
“We are delighted with this discovery,” said Fundación Dinópolis Ph.D. student Sergio Sánchez Fenollosa.
“It allows us to better understand Iberian Mesozoic ecosystems and the diversity of sauropod dinosaurs that inhabited the European Jurassic.”
The Spanish Diplodocus lived roughly 150 million years ago near the end of the Jurassic period.
The dinosaur stretched an estimated 25 m (82 feet), on par with its American relatives.
The animal’s fossilized remains — 14 well-preserved tail vertebrae and several chevron bones — were unearthed at the La Tejería site near the city of El Castellar in the Spanish province of Teruel.
“The Diplodocus from El Castellar was approximately 25 m long, making it another of the giant sauropods of the Spanish Jurassic, alongside other sauropod dinosaurs from Teruel with characteristics very different from those of diplodocids, such as Turiasaurus and Losillasaurus, among others,” said Dr. Alberto Cobos, managing director of Fundación Dinópolis.
“It was an exciting and continuous process of seeing the pieces of the puzzle gradually fall into place.”
“From the early stages of the osteological study, we noticed strong similarities with several diplodocine sauropods.”
“As we looked more closely at the anatomy, we began to identify a combination of features characteristic of Diplodocus species.”
“Then, as we carried out different evolutionary analyses, they kept pointing in the same direction.”
“With each new result, the picture became clearer: we were looking at a Diplodocus.”
According to the team, the presence of Diplodocus in Iberia offers strong evidence that dinosaurs moved between North America and Europe during that era, likely crossing temporary land bridges that appeared as the proto-North Atlantic Ocean periodically receded.
“The outcome of the dig is some of the strongest paleontological evidence for episodes of dispersal and faunal exchange between the two continents across the proto-Atlantic Ocean during the Late Jurassic,” Sánchez Fenollosa said.
“The fossils of all these dinosaurs, including those of the new Diplodocus specimen, make Teruel a reference place for understanding this great diversity.”
The team’s paper will be published in the Journal of Vertebrate Paleontology.
_____
Sergio Sánchez Fenollosa et al. 2026. Intercontinental evidence of the iconic genus Diplodocus Marsh, 1878 (Dinosauria, Sauropoda). Journal of Vertebrate Paleontology, in press; doi: 10.1080/02724634.2026.2718423

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DinosaurDiplodocusDiplodocus hallorumEuropeFossilIberiaIberian PeninsulaJurassicLa TejeriaMigrationNorth AmericaSauropodSauropodaSpain

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Paleontologists from Fundación Dinópolis have announced the identification of the first confirmed fossils belonging to the genus Diplodocus found outside of North America, specifically in Spain. This discovery involves a specimen designated as Spanish Diplodocus, which is noted to be a close relative of Diplodocus hallorum. This find allows researchers to gain a deeper understanding of Iberian Mesozoic ecosystems and the range of sauropod dinosaurs that inhabited the European Jurassic period. The fossilized remains, consisting of fourteen well-preserved tail vertebrae and several chevron bones, were unearthed at the La Tejería site near El Castellar in the Spanish province of Teruel.

The newly discovered dinosaur was estimated to be approximately twenty-five meters in length, comparable to its American relatives. Dr. Alberto Cobos, managing director of Fundación Dinópolis, noted that this specimen contributes significantly to understanding the diversity of sauropod dinosaurs in the Spanish Jurassic, distinguishing it from other contemporaneous sauropods in the region such as Turiasaurus and Losillasaurus. The process of identification involved a careful osteological study, where researchers initially noted strong similarities with several diplodocine sauropods. Through detailed anatomical examination and subsequent evolutionary analyses, the team was able to confirm that the specimen exhibited a combination of features characteristic of Diplodocus species, solidifying the identification.

The presence of Diplodocus in Iberia carries profound implications for understanding continental biogeography. According to the research team, this evidence strongly supports the hypothesis that dinosaurs dispersed between North America and Europe during the Late Jurassic. This dispersal likely occurred via temporary land bridges that existed when the proto-North Atlantic Ocean periodically receded. The fossils of these dinosaurs, including the new Diplodocus specimen, establish Teruel as a key reference point for studying this great diversity of prehistoric fauna. The team intends to publish their findings in the Journal of Vertebrate Paleontology.