[ORGANIZATION]
Hesperornithiformes
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Fossil discoveries in Hell Creek Formation
4 clusters · 19 sources · last updated
Latest: Paleontological discoveries reveal dinosaur evolution and avian survival secrets
Paleontologists have identified exceptionally well-preserved feathers within a 66-million-year-old coprolite, or fossilized dung, located in the Hell Creek Formation of Montana, USA. The specimen contains remnants of Hes