Shonisaurus: Research Database Theropoda · Cretaceous · Unknown Research Note: Shonisaurus was a theropoda from the Cretaceous of Unknown, providing important data on prehistoric life and ecosystem dynamics. Research Finding Status Grade Year Method Citation Impact Hogler 1992: Shonisaurus and related taxa PALAIOS Confirmed B 1992 Fossil Hogler, PALAIOS Taxonomy Mcgowan Motani 1999: … Read more
In Depth Keilhauia is a genus of opthalmosaurid ichthyosaur that lived during the early Cretaceous. Though only known from partial remains, Keilhauia shares many similarities to the genera Cryopterygius and Caypullisaurus. Further Reading - A new ophthalmosaurid (Ichthyosauria) from Svalbard, Norway, and evolution of the ichthyopterygian pelvic girdle. - PLoS ONE 12(1):e0169971. - L. L. … Read more
Acamptonectes: Research Database Ichthyosauria (Sauropterygia) · Early Jurassic (~200-190 MYA) · Europe — England (Yorkshire, Lower Lias) Research Note: Acamptonectes was an ichthyosaur from the Early Jurassic of England — an early ichthyosaur and an important taxon for understanding ichthyosaur evolution and the diversification of marine reptiles in the Early Jurassic. Research Finding … Read more
Shastasaurus: Research Database Reptilia (Ichthyosauria) · Middle-Late Triassic (~240-210 MYA) · Asia — China Research Note: Shastasaurus was a marine reptile from the Triassic of China — an important taxon for understanding the early evolution of marine reptiles during the Triassic period. Research Finding Status Grade Year Method Citation Impact Maisch & Matzke … Read more
Athabascasaurus: Research Database Pliosauridae (Sauropterygia) · Early Cretaceous (~110 MYA) · North America — Canada (Alberta) Research Note: Athabascasaurus was a pliosaurid from the Early Cretaceous of Alberta, Canada — a short-necked pliosaur and an important taxon for understanding pliosaur evolution in the Cretaceous of North America. Research Finding Status Grade Year Method … Read more
Auroroborealia: Research Database Ornithischia (Dinosauria) · Late Cretaceous (~77 MYA) · North America — USA (Montana) Research Note: Auroroborealia was an ornithischian from the Late Cretaceous of Montana — an important taxon for understanding ornithischian diversity in the Two Medicine Formation. Research Finding Status Grade Year Method Citation Impact Longrich 2015: Auroroborealia and … Read more