Unknown
Lewis, C.F.M.
;
Forbes, D.L.
;
Todd, B.J.
;
[et al.]
Nielsen, E.
;
Thorleifson, L.H.
;
Henderson, P.J.
;
McMartin, I.
;
Anderson, T.W.
;
Betcher, R.N.
;
Buhay, W.M.
;
Burbidge, S.M.
;
Schröder-Adams, C.J.
;
King, J.W.
;
Moran, K.
;
Gibson, C.
;
Jarrett, C.A.
;
... and further 8
Geological Society of America