A group of early hadrosauroids, accompanied by a moderate-sized nodosaurid, walk through a coastal forest filled with ferns and early flowering plants (including relatives of modern sycamores and magnolias). A different, much larger nodosaurid (right) and a pair of dromaeosaurids (left) watch from the forest margins, while a goniopholidid ‘croc’ swims through the stream (bottom-left). An assortment of additional dinosaur footprints are recorded in the sediment, including those of other hadrosauroids and dromaeosaurids as well as a large predatory theropod (bottom-center). This scene takes place along the shoreline of the encroaching Western Interior Seaway that would soon cover much of North America, including western Colorado.
Colorado National Monument during the middle Cretaceous, roughly 100-million-years-ago, highlighting some of the fossils that have currently been identified from the Naturita Formation.
A group of early hadrosauroids, accompanied by a moderate-sized nodosaurid, walk through a coastal forest filled with ferns and early flowering plants (including relatives of modern sycamores and magnolias). A different, much larger nodosaurid (right) and a pair of dromaeosaurids (left) watch from the forest margins, while a goniopholidid ‘croc’ swims through the stream (bottom-left). An assortment of additional dinosaur footprints are recorded in the sediment, including those of other hadrosauroids and dromaeosaurids as well as a large predatory theropod (bottom-center). This scene takes place along the shoreline of the encroaching Western Interior Seaway that would soon cover much of North America, including western Colorado.
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