New iguanodontian dinosaur discovered in Portugal

Published: Tuesday, September 23, 2025 at 8:34 pm

New Dinosaur Species Unearthed in Portugal

Paleontologists have announced the discovery of a new species of iguanodontian dinosaur, *Cariocecus bocagei*, dating back 125 million years to the Cretaceous period. The findings, detailed in a recent paper published in the *Journal of Systematic Paleontology*, are based on fossils unearthed in 2016.

The newly identified dinosaur, a medium-sized herbivore, is distinguished by a unique skeletal feature: the fusion of its zygomatic bone (cheek bone) to the upper jaw bone. This characteristic, also observed in modern birds, sets *C. bocagei* apart from other iguanodontians. Researchers hypothesize that this fusion may have provided the dinosaur with stronger jaws, enabling it to consume tougher food sources like fruits or seeds.

The discovery began with the identification of a 20-inch "rock" containing a line of fossilized teeth. Subsequent excavation revealed additional bones in the area. The specimen, according to the researchers, had not reached full skeletal maturity.

Iguanodontians, a group of herbivorous dinosaurs, originated in South America and spread through North America during the Upper Jurassic period. This group of dinosaurs were among the first to be studied. The team involved in the discovery included researchers from Belgium, the U.S., Portugal, and Italy. The region where the fossils were found is known for its rich paleontological history, with previous discoveries of ancient animals from the crocodile, fish, and tortoise families. The environment at the time was likely a flood swamp near a coastline valley. Further excavations are planned, with the potential for uncovering additional specimens of *C. bocagei* or even new dinosaur species.

BNN's Perspective:

This discovery underscores the ongoing importance of paleontological research in expanding our understanding of prehistoric life. The unique skeletal feature of *C. bocagei* offers valuable insights into the evolution and adaptation of iguanodontians. The potential for future discoveries in the region highlights the need for continued investment in scientific exploration and preservation of our planet's rich history.

Keywords: dinosaur, iguanodontian, *Cariocecus bocagei*, Cretaceous period, fossils, paleontology, herbivore, zygomatic bone, jaw bone, Portugal, discovery, research, evolution, scientific exploration

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