Dinosaurs

Blogs about dinosaurs

Reconstruction of Llukalkan aliocranianus head

An article published in the “Journal of Vertebrate Paleontology” reports the discovery of a carnivorous dinosaur that lived about 80 million years ago in today’s Argentina. A team of researchers led by paleontologist Federico Gianechini of the National University of San Luis named it Llukalkan aliocranianus after examining a partial skull discovered in the Bajo de la Carpa Formation. The new species and the new genus have been attributed to the Furileusauria group, part of the abelisaurid family, widespread in the ancient subcontinent Gondwana. The examination of the uncovered bones suggests that it had better hearing than the other abelisaurids.

Oviraptorid brooding its nest of eggs

An article published in the journal “Science Bulletin” reports the discovery of fossils of a species of feathered dinosaur attributed to the oviraptorid family that include a partial skeleton of an adult that was brooding a group of 24 eggs, some of which were broken and showed bones still in their embryonic state. A team of researchers conducted the first study of these fossils dating back to about 70 million years ago, during the Cretaceous period, discovered in the Nanxiong Formation, near the city of Ganzhou, China. This is the first discovery of a non-avian dinosaur while it was brooding a nest with eggs that preserved their embryos.

Oksoko avarsan fossils

An article published in the journal “Royal Society Open Science” reports the identification of a new species of parrot-like feathered dinosaur that lived in modern Mongolia about 68 million years ago, at the end of the Cretaceous period. A team of researchers named it Oksoko avarsan after examining various specimens in various states of incompleteness. Some of the specimens had been confiscated by the Mongolian authorities after they were found in the possession of smugglers. These dinosaurs were classified within the oviraptorid (Oviraptoridae) family, but were toothless and had two fingers instead of the typical three of their closest relatives.

Spinosaurus aegyptiacus skeleton

An article published in the journal “Cretaceous Research” reports the discovery of hundreds of teeth of Spinosaurus aegyptiacus in the ancient Kem Kem river system, along the border between today’s Morocco and Algeria. A team of researchers collected about 1,200 fossil teeth in an ancient river bed in today’s Morocco, and analysis revealed that nearly half of them were of Spinosaurus aegyptiacus. Their conclusion is that it’s evidence that about 100 million years ago, in the Cretaceous period, this dinosaur was well adapted to aquatic life, a confirmation of the thesis supported by a growing number of paleontologists.

Sauropod fossil embryo

An article published in the journal “Current Biology” reports the study of a fossil embryo of titanosaur dating back to about 80 million years ago, in the Cretaceous period, that came from Argentina. A team of researchers led by Dr. Martin Kundrat used sophisticated techniques to study it. The egg around it was dissolved by applying very carefully an acid preparation, and at that point, the embryo was scanned at the European Synchrotron Radiation Facility (ESRF) in Grenoble, France, which made it possible to create a three-dimensional reproduction. The examination offers new insight into the development of sauropods, the large group of herbivorous dinosaurs, and particularly their skulls, indicating that at least titanosaurs had stereoscopic vision and a horn like rhinos that was lost in adulthood.