Arlington, Anne Arundel County, Maryland, United States; Arundel Formation, Aptian, early Cretaceous [details]
"Arlington, Anne Arundel County, Maryland", USA; Arundel Fm., Aptian, early Cretaceous [details]
"White House Bluff, Fairfax County, Virginia", USA; Patapsco Fm., Albian, early Cretaceous [details]
Arlington, Anne Arundel County, Maryland, United States; Arundel Formation, Aptian, early Cretaceous [details]
Arlington, Anne Arundel County, Maryland, United States; Arundel Formation, Aptian, early Cretaceous [details]