Koshisaurus is a monospecific genus of basal hadrosauroid from the Kitadani Formation in Japan. The discovery of the genus suggests that hadrosauroids had higher diversity along the eastern margin of Asia in the Early Cretaceous.[1] "Koshi" means an old Japanese regional name including Fukui prefecture where fossils of the genus were discovered.
Koshisaurus was unlike most hadrosauroids due to the fact that it possessed an antorbital fossa, as well as three subsidiary ridges on its maxillary teeth, similar to those of Equijubus. These ridges are also present on the also Asian genera Xuwulong, Jinzhousaurus and Altirhinus; but all three lack antorbital fossae, placing them as more advanced than Koshisaurus.[1]
koshisaurus, monospecific, genus, basal, hadrosauroid, from, kitadani, formation, japan, discovery, genus, suggests, that, hadrosauroids, higher, diversity, along, eastern, margin, asia, early, cretaceous, koshi, means, japanese, regional, name, including, fuk. Koshisaurus is a monospecific genus of basal hadrosauroid from the Kitadani Formation in Japan The discovery of the genus suggests that hadrosauroids had higher diversity along the eastern margin of Asia in the Early Cretaceous 1 Koshi means an old Japanese regional name including Fukui prefecture where fossils of the genus were discovered KoshisaurusTemporal range Early Cretaceous 128 Ma PreꞒ Ꞓ O S D C P T J K Pg N Fossil elements and modelScientific classificationDomain EukaryotaKingdom AnimaliaPhylum ChordataClade DinosauriaClade OrnithischiaClade OrnithopodaSuperfamily HadrosauroideaGenus KoshisaurusShibata and Azuma 2015Type species Koshisaurus katsuyamaShibata and Azuma 2015Description Edit nbsp RestorationKoshisaurus was unlike most hadrosauroids due to the fact that it possessed an antorbital fossa as well as three subsidiary ridges on its maxillary teeth similar to those of Equijubus These ridges are also present on the also Asian genera Xuwulong Jinzhousaurus and Altirhinus but all three lack antorbital fossae placing them as more advanced than Koshisaurus 1 See also Edit nbsp Dinosaurs portalTimeline of hadrosaur researchReferences Edit a b Shibaba Masateru Azuma Yoichi 2015 New basal hadrosauroid Dinosauria Ornithopoda from the Lower Cretaceous Kitadani Formation Fukui central Japan PDF Zootaxa 3914 4 421 440 doi 10 11646 zootaxa 3914 4 3 PMID 25661952 nbsp This article related to ornithopod dinosaurs is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title Koshisaurus amp oldid 1096153595, wikipedia, wiki, book, books, library,
