I did my thesis near Big Water, UT (then named Glen Canyon City, UT) on the "Dakota Formation."

am Ende, Barbara A., 1991, Depositional environments, palynology, and age of the Dakota Formation, south-central, Utah, in Stratigraphy, depositional environments; and sedimentary tectonics of the western margin Cretaceous Western Interior Seaway, J. Dale Nations and Jeffrey G. Eaton, eds.

Since then, then opposition to the name "Dakota" has been raised for the western side of the Western Interior Seaway.

Witzke, B.J., and Ludvigson, G.A., 1994, The Dakota Formation in Iowa and the type area, in Shurr, G.W., Ludvigson, G.A., and Hammond, R.H, editors, Perspectives on the eastern margin of the Cretaceous Western Interior Basin: Geological Society of America Special Paper, v. 287, p. 43-78.

The Utah Geological Survey uses the term "Naturita Fm" for the rocks previously described as "Dakota":

Carpenter, K., 2014, Where the sea meets the land—the unresolved Dakota problem in Utah: Utah Geological Association Publication 43, p. 357–372.

I haven't studied the widespread stratigraphic relations of the Cretaceous rocks in the 4 Corners region. If your look at Figure 5 in Carpenter, 2014, it shows more complexity to the post Morrison rocks that I'm familiar with. However, it's something to ponder. In Figure 5, imagine turning everything that is orange into yellow. Call everything in the west the Dakota Group, and it makes a lot of sense, at least to me for the moment.