Where are fossils of Archelon primarily found today?
Answer
Marine deposits of the Western Interior Seaway (Kansas and South Dakota)
Archelon fossils are predominantly recovered from the marine deposits of the ancient Western Interior Seaway, corresponding geographically to modern Kansas and South Dakota.

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Which measurement best reflects the maximum estimated length of an Archelon from head to tail tip?During which geological period did Archelon live?To what extinct family did Archelon belong?What was a distinguishing feature of Archelon's shell (carapace) compared to many modern turtles?Where are fossils of Archelon primarily found today?What specific type of prey did Archelon's specialized jaw structure suggest it preferred?What event marked the end of Archelon's existence?How did the fore-flippers of Archelon compare in size to the entire carapace length of a modern Leatherback?What is the primary reason paleontologists dismiss modern sighting claims of Archelon?How does the carapace length of Archelon compare to the Leatherback, the largest existing marine turtle?