US EditionScientists discover a new dinosaur from Argentina with a crocodile bone in its mouth
- On September 23, 2025, scientists in Argentina announced the identification of a previously unknown megaraptoran dinosaur, which they have called Joaquinraptor casali.
- A partial skeleton discovered in the Lago Colhué Huapi Formation dates back to approximately 66 to 70 million years ago, near the end of this dinosaur species' existence.
- The skeletal remains include parts of the skull, ribs, legs, tail, and a crocodyliform limb bone that may reveal the dinosaur's diet and ecological role.
- Paleontologist Matt Lamanna said the dinosaur could have reached 23 feet in length and weighed about a ton, with some specimens estimated to be at least 19 years old at death.
- This discovery fills a significant fossil record gap and sheds light on the megaraptoran group’s role as large-clawed carnivores in prehistoric ecosystems.
153 Articles
153 Articles
Scientists discover new dinosaur in Argentina, shedding light on ancient predator's diet
Scientists in Argentina have unearthed a new dinosaur species, a powerful, 23-foot-long predator from a mysterious group of dinosaurs called megaraptorans. The discovery, which includes a fossilized crocodile bone near the dinosaur's jaws, offers new insights into the creature's diet and was announced Tuesday in the journal Nature Communications. The new species, named Joaquinraptor casali, belongs to a family of dinosaurs known for their stretc…
Paleontologists have discovered a new species of dinosaur in Argentina, named Joaquinraptor casali, which belongs to the megaraptor group. The newly discovered dinosaur probably reached a length of up to seven meters and weighed over a ton. The creature was an apex predator in its time about 67 million years ago and probably devoured ancient crocodiles - judging by the bone found in its mouth.
Scientists Uncover New Dinosaur with Crocodile Remains in Its Jaws
Researchers have named it Joaquinraptor casali, a tribute to the son of a researcherGetty Dinosaur bones (stock image).NEED TO KNOWResearchers digging in Argentina have uncovered a new type of ancient dinosaur that once roamed the Earth millions of years agoThe dinosaur is a form of Megaraptoran, a "group of large-clawed carnivorous" dinosaurs that used to live in Asia, Australia and South America, per Nature CommunicationsThey've named this one…
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