In Depth Smaller velociraptorine dromaeosaurs seem to have been one of the most important types of dinosaur in Asia during the Late Cretaceous as evidenced by the ever growing number of remains and genera. Linheraptor was similar in form to most others such as Velociraptor and it may have lived and hunted in pretty much … Read more
In Depth Just thirty years before its description, the concept of dinosaurs evolving into birds was still a very controversial theory that did not have universally wide acceptance in academic circles. However, since the opening of fossil beds in China, new discoveries have slowly but steadily been made, each one adding more and more weight … Read more
Xixiasaurus: Research Database Troodontidae (Theropoda) · Late Cretaceous (~70-66 MYA) · Asia — China (Henan, Xixia Formation) Research Note: Xixiasaurus was a troodontid theropod from the Late Cretaceous of China — known from an almost complete skull and providing important data on troodontid anatomy and diversity in the latest Cretaceous of Asia. Research … Read more
Unenlagia: Research Database Dromaeosauridae (Theropoda) · Late Cretaceous (~90 MYA) · South America — Argentina (Cerro del Pueblo Formation) Research Note: Unenlagia was a dromaeosaurid theropod from the Late Cretaceous Cerro del Pueblo Formation of Argentina. As a South American dromaeosaurid, it provides important data on the biogeography and evolutionary relationships of dromaeosaurids in … Read more
Mahakala: Research Database Dromaeosauridae (Theropoda) · Late Cretaceous (~75–71 MYA) · Asia — Mongolia (Gobi Desert) Research Note: Mahakala was a small dromaeosaurid theropod from the Late Cretaceous of Mongolia — one of the smallest known dromaeosaurids and a critical taxon for understanding the evolution of small predatory dinosaurs leading to birds. Its name … Read more
In Depth Originally thought to be another specimen of Velociraptor, a CAT scan in 1998 revealed that the fossil was of a new though closely related genus. Additional study of Tsaagan has indicated that it is most closely related to Linheraptor. Tsaagan probably lived and hunted like most other small Asian dromaeosaurids, hunting either other … Read more