The Sinuiju Formation(신의주층) is a geologic formation in North Korea. Formerly of uncertain age, it is now thought to be Early Cretaceous. A variety of fossils are known from the formation, including those of anurognathid pterosaurs (possibly Jeholopterus) and birds such as the specimen of a very large enantiornithine with a long tibia and a long pygostyle. Frogs have also been found in the formation. Numerous compression fossils of insects have also been found.
Fossil content Fish Fish from the Sinujiu Formation Genus Species Material Notes MemberImagesLycoptera L. sp.AcipenseriformesIndeterminate
Amphibians Amphibians from the Sinujiu Formation Genus Species Material Notes MemberImagesAnura Anura indet. (Possibly Liaobatrachus grabaui).
Pterosaurs Pterosaurs from the Continental Teriminal Formation Genus Species Material Notes MemberImagesJeholopterusJ. cf. ningchengensisSpecimen CKGP 19960828, formerly PS198922PterosauriaIndeterminateSpecimen PS199921 Dinosaurs
Birds
Birds from the Sinujiu Formation Genus Species Material Notes MemberImagesConfuciusornithidae Confuciusornithidae indet.(Includes the fossil known colloquially as the Archaeopteryx of Korea)Enantiornithes Indeterminate OrnithuraeIndeterminate
Non-avian dinosaurs Dinosaurs from the Sinujiu Formation Genus Species Material Notes MemberImagesDinosauria Indeterminate A single tooth
Mammals Proboscideans from the Continental Teriminal Formation Genus Species Material Notes MemberImagesMultituberculataIndeterminate
Insects Insects from the Sinujiu FormationPaektodong, Sinuiju City at Fossilworks.org Genus Species Material Notes MemberImagesAngarosphexA. baektoensusEphemeropsisE. spKaratausK. ryonsangensisSinuijumantispaS. ryonsangiensisStenophlebiaS. ryonsangensisStellularisS. sinuijuensisSinuijusS. baektoensisSinuijuhelorusS. baektoensisPompilopterusP. ryonsangensisZygadeniaZ. liui Conchostracans Conchostracans from the Sinujiu Formation Genus Species Material Notes MemberImagesEosestheria E. sp. A conchostracan Uncertain Uncertain fossils from the Sinujiu Formation Genus Species Material Notes MemberImages"Proornis" P. coreaeNomen nudum; assigned to Osteichthyes by the original describer in 1993 but assigned to Aves in 1996
See also List of dinosaur-bearing rock formations List of stratigraphic units with few dinosaur genera
References