Hasandong Formation
Encyclopedia
The Hasandong Formation is a Mesozoic
geologic formation. Dinosaur
remains diagnostic to the genus
level are among the fossils that have been recovered from the formation.
Mesozoic
The Mesozoic era is an interval of geological time from about 250 million years ago to about 65 million years ago. It is often referred to as the age of reptiles because reptiles, namely dinosaurs, were the dominant terrestrial and marine vertebrates of the time...
geologic formation. Dinosaur
Dinosaur
Dinosaurs are a diverse group of animals of the clade and superorder Dinosauria. They were the dominant terrestrial vertebrates for over 160 million years, from the late Triassic period until the end of the Cretaceous , when the Cretaceous–Paleogene extinction event led to the extinction of...
remains diagnostic to the genus
Genus
In biology, a genus is a low-level taxonomic rank used in the biological classification of living and fossil organisms, which is an example of definition by genus and differentia...
level are among the fossils that have been recovered from the formation.
Paleofauna
- Chiayusaurus asianensis (sauropod indet) - "Tooth."
- Pukyongosaurus milleniumi (sauropod indet) - "Cervical and dorsal vertebrae, ribs, limb and girdle elements."