Imlay, R. W. (1982). Late Bajocian ammonites from southern Alaska: In Alaska, upper Bajocian beds have been found only in the south ; they have been dated by ammonites as early late Bajocian ; apparently, southern Alaska was not connected with the rest of Alaska during late Bajocian time. U. S. Government Print. Office.
Chicago-Zitierstil (17. Ausg.)Imlay, Ralph Willard. Late Bajocian Ammonites from Southern Alaska: In Alaska, Upper Bajocian Beds Have Been Found Only in the South ; They Have Been Dated by Ammonites as Early Late Bajocian ; Apparently, Southern Alaska Was Not Connected with the Rest of Alaska During Late Bajocian Time. Washington: U. S. Government Print. Office, 1982.
MLA-Zitierstil (9. Ausg.)Imlay, Ralph Willard. Late Bajocian Ammonites from Southern Alaska: In Alaska, Upper Bajocian Beds Have Been Found Only in the South ; They Have Been Dated by Ammonites as Early Late Bajocian ; Apparently, Southern Alaska Was Not Connected with the Rest of Alaska During Late Bajocian Time. U. S. Government Print. Office, 1982.