The sedimentary rocks which formed in and around the Sundance Sea are often rich in fossils.
(The sedimentary rocks; formed; L:in and around the Sundance Sea) (The sedimentary rocks which formed in and around the Sundance Sea; are; T:often; rich in fossils)
The sedimentary rocks The sedimentary rocks which formed in and around the Sundance Sea
formed are
L:in and around the Sundance Sea
T:often rich in fossils