The plain was formed millions of years ago when deep marine sediments were deposited on the ocean's floor.
An analysis of marine sediments dating from 21 to 34 million years is published in Science.
They usually live in marine sediments, although they can live elsewhere.
Despite being found in marine sediment, Antarctopelta, like all ankylosaurs, lived on land.
The crater is under the sea and buried beneath marine sediments.
Deltaic and marine sediments are found north of Peace River.
This process is also considered a major sink for sulfate in marine sediments.
It is occasionally found in ash layers within marine sediments.
The species was taken from the thermal marine sediments and studied by growing it in culture in a lab.
From 55 to 37 Ma the basin was below sea level and filled with marine sediments.
Wörterbuch für Geologie