The Uhangri Formation (), located at the Haenam, Jeollanam-do, South Korea is a non-marine geological formation known with epiclastic fluvio-lacustrine sequence with minor volcaniclastics. Ichnofossils are found in the upper part of the Uhangri Formation, and they are associated with ripple marks, indicating the part of the formation was the shallow lake margin.
Fossil contents Ichnofossils Pterosaur, dinosaur, and bird tracks are preserved in situ, nearby the Haenam Uhangri Dinosaur Museum. Unnamed tracks of theropods, sauropods and ornithopods are known from the Uhangri Formation. Star-shaped dinosaur trackway with an unknown trackmaker has been discovered and described. It is unsure whether it represents manus-only trackway made by a sauropod trackmaker during swimming, or undertracks made by an ornithopod trackmaker.
Ichnofossils of the Uhangri Formation Genus Species Presence Description Images Haenamichnus H. uhangriensis Site P2 Pes size 350mm, consistent with gigantic azhdarchid pterosaurs. Pad impressions present on pes. H. isp. Site P1, Site P4 and Site P9 Pes size 200-220mm, consistent with azhdarchid pterosaurs wingspan of 5-6m. Length of the trackway from Site P9 is 7.3 meters long, representing the longest pterosaur trackway. Hwangsanipes H. choughi Ornithuromorph bird tracks with webbings. Uhangrichnus U. chuni Ornithuromorph bird tracks without webbings. Caririchnium C. isp. Ornithopod tracks Lithographus L. hieroglypichus Arthropod tracks, associated with burrows and a resting trace. Possibly made by Dragonfly nymphs.
Ostracods Ostracods of the Uhangri Formation Genus Species Presence Description Images Cypridea C. sp. Candona C. sp. Eucythere E. sp.
Paleoflora Plants of the Uhangri Formation Genus Species Presence Description Images Cupressinoxylon C. uhangriense Taxodioxylon T. cf. nihongii
See also List of fossil sites
References
External links Haenam Uhangri Dinosaur Museum