In Depth Sinusonasus is a genus of troodontid dinosaur that lived in China during the early Cretaceous. Sinusonasus means ‘wave nose’, and this name was given after the way the snout on the holotype skull has an undulating profile kind of like a wave. The tail vertebrae of Sinusonasus are also noteworthy in that the … Read more
Borogovia: Research Database Troodontidae (Theropoda) · Late Cretaceous (~70 MYA) · Asia — Mongolia (Gobi Desert, Nemegt Formation) Research Note: Borogovia was a troodontid theropod from the Late Cretaceous of Mongolia — a member of the Troodontidae that provides data on troodontid diversity and the evolution of bird-like features in theropods. Research Finding … Read more
In Depth Urbacodon is truly an international genus, not so much by its geographic distribution, but because the team involved were from many different countries. The name Urbacodon means ‘URBAC tooth’, and URBAC is an acronym that recognises the Uzbek, Russian, British, American and Canadian nationalities of those involved. Urbacodon was described by a single … Read more
Stenonychosaurus: Research Database Troodontidae (Theropoda) · Late Cretaceous (~77 MYA) · North America — Canada (Alberta, Dinosaur Park Formation) Research Note: Stenonychosaurus was a troodontid theropod from the Late Cretaceous of Alberta, Canada — known from fragmentary material but an important taxon for understanding troodontid diversity in North America. Research Finding Status Grade … Read more
Hesperornithoides: Research Database Troodontidae (Theropoda) · Late Jurassic (~155-150 MYA) · North America — USA, Wyoming (Morrison Formation) Research Note: Hesperornithoides was a troodontid theropod from the Late Jurassic of Wyoming — one of the few troodontids known from the Morrison Formation and an important taxon for understanding troodontid evolution in the Jurassic of … Read more
Troodon: Research Database Troodontidae (Theropoda) · Late Cretaceous (~77–66 MYA) · North America — USA, Canada Research Note: Troodon is one of the most celebrated dinosaurs from the Late Cretaceous of North America, known from beautifully preserved specimens featuring serrated, blade-like teeth that first suggested a carnivorous or omnivorous diet. Its large eyes and … Read more
Gobivenator: Research Database Oviraptorosauria (Theropoda) · Late Cretaceous (~70 MYA) · Asia — Mongolia (Nemegt Formation) Research Note: Gobivenator was an oviraptorosaurian theropod from the Late Cretaceous of Mongolia — one of the last known non-avian dinosaurs and an important taxon for understanding theropod evolution in the latest Cretaceous of Asia. Research Finding … Read more
In Depth Initially thought to be one of the most primitive birds in the fossil record, later studies have depicted Jinfengopteryx as a small troodontid theropod dinosaur. This new interpretation has been derived from observation of the form of the skull and the presence of an enlarged sickle claw on the second toe of each … Read more
Sinovenator: Research Database Troodontidae (Theropoda) · Early Cretaceous (~125 MYA) · Asia — China (Liaoning, Yixian Formation) Research Note: Sinovenator was a troodontid from the Early Cretaceous of Liaoning, China — an important taxon for understanding troodontid evolution and the origin of birds. Research Finding Status Grade Year Method Citation Impact Zelenitsky & … Read more
Mei: Research Database Theropoda (Dinosauria) · Early Cretaceous (~130-125 MYA) · Asia — China (Liaoning, Yixian Formation) Research Note: Mei was a small troodontid theropod from the Early Cretaceous of Liaoning, China — known from exceptionally preserved specimens and an important taxon for understanding troodontid anatomy, behavior, and the dinosaur-bird transition. Research Finding … Read more