Paleontologists from the Fundación Conjunto Paleontológico de Teruel-Dinópolis have revealed new findings within the scientific journal Vertebrate Zoology describing a unprecedented stegosaur cranium found in Riodeva (Teruel, Spain). The fossil, which comes from a plated dinosaur that lived about 150 million years in the past, can also be serving to researchers suggest a brand new clarification for the way stegosaurs developed and unfold internationally.
Stegosaurs have been plant-eating dinosaurs that walked on 4 legs and are finest identified for the rows of plates and spikes operating from their necks to their tails. The newly studied fossil was uncovered throughout excavations led by Fundación Dinópolis on the “Están de Colón” website throughout the Villar del Arzobispo Formation, which dates again to the Late Jurassic interval.
Researchers recognized the specimen as Dacentrurus armatus, one in every of Europe’s most iconic stegosaurs. The fossil is taken into account the best-preserved stegosaur cranium ever found in Europe, a outstanding achievement as a result of dinosaur skulls are extraordinarily delicate and barely survive intact over thousands and thousands of years.
Sergio Sánchez Fenollosa, researcher at Fundación Dinópolis and co-author of the research, stated: “The detailed research of this distinctive fossil has allowed us to disclose beforehand unknown features of the anatomy of Dacentrurus armatus, the quintessential European stegosaur, which in 2025 marks 150 years since its first description. Dinosaurian skulls are not often preserved as a result of excessive fragility of their bones. This discovery is essential to understanding how stegosaurian skulls developed.
“Moreover, alongside the anatomical research, we now have additionally proposed a brand new speculation that redefines the evolutionary relationships of stegosaurs worldwide. On account of this work, we now have formalized the definition of a brand new group referred to as Neostegosauria.”
New Dinosaur Evolution Speculation
The researchers say Neostegosauria consists of medium and enormous stegosaur species that lived throughout a number of continents throughout totally different durations of the Jurassic and Early Cretaceous. In accordance with the research, members of this group inhabited areas that are actually Africa and Europe through the Center and Late Jurassic, North America through the Late Jurassic, and Asia through the Late Jurassic and Early Cretaceous.
The workforce believes this new classification may reshape how scientists perceive the evolutionary historical past and world distribution of plated dinosaurs.
Fossil Web site Nonetheless Producing Essential Discoveries
Alberto Cobos, managing director of Fundación Dinópolis and co-author of the analysis, emphasised the broader significance of the invention: “This twin achievement-both the research of an distinctive fossil and the proposal of a brand new evolutionary hypothesis-positions this analysis as a world reference in stegosaurian research.
“This fossil website from Riodeva continues to be a topic of analysis and nonetheless holds quite a few related fossils, together with extra postcranial components from the identical grownup specimen and, notably, juvenile people, a very uncommon mixture in one of these dinosaurs. These discoveries proceed to exponentially enhance the paleontological heritage of the province of Teruel, making it one of many iconic areas for understanding the evolution of life on Earth.”
Scientists say the Riodeva fossil website continues to yield precious materials, together with extra bones from the identical grownup dinosaur and uncommon juvenile stays. Discoveries like these are serving to set up Teruel as one of many world’s most essential areas for finding out prehistoric life and dinosaur evolution.
Examine Revealed in Vertebrate Zoology
The analysis seems in Vertebrate Zoology below the title “New insights into the phylogeny and cranium evolution of stegosaurian dinosaurs: A rare skull from the European Late Jurassic (Dinosauria: Stegosauria).” The paper was authored by paleontologists Sergio Sánchez Fenollosa and Alberto Cobos of Fundación Dinópolis.
The undertaking was supported by Fundación Dinópolis, which is affiliated with the Dept. of Medio Ambiente y Turismo of the Gobierno de Aragón. It additionally types a part of the actions of Analysis Group E04-23R FOCONTUR, funded by the Gobierno de Aragón via the Dept. of Empleo, Ciencia y Universidades.
Extra help got here from the Unidad de Paleontología de Teruel, funded by the Gobierno de España via the Ministry of Ciencia, Innovación y Universidades. Excavation work on the website additionally acquired backing via the undertaking Los yacimientos paleontológicos de la provincia de Teruel como issue de desarrollo territorial (IV), funded collectively by the Gobierno de España and the Gobierno de Aragón via the Teruel Funding Fund by way of the Dept. of Presidencia, Economía y Justicia.
