ALTERNATION OF NEURAL SPINE HEIGHT IN CERTAIN EARLY PERMIEN TETRAPODS.VAUGHN PP.1970; BULL. SOUTH. CALIFORNIA ACAD. SCI.; 1970, VOL. 69, NUM. 2 , P. 80 A 86Miscellaneous

MORE VERTEBRATES INCLUDING A NEW MICROSAUR, FROM THE UPPER PENNSYLVANIAN OF CENTRAL COLORADO.VAUGHN PP.1972; CONTRIB. SCI; USA; 1972, NUM. 0223, P. 1 A 30Miscellaneous

EARLY PERMIAN VERTEBRATES FROM SOUTHERN NEW MEXICO AND THEIR PALEOZOOGEOGRAPHIC SIGNIFICANCE.VAUGHN PP.1969; LOS.ANGELES.COUNTY.MUS.-CONTRIB.SCI; USA; 1969(6), NUM. 0166, P. 1 A 22Miscellaneous

UPPER PENNSYLVANIAN VERTEBRATES FROM THE SANGRE DE CRISTO FORMATION OF CENTRAL COLORADO.VAUGHN PP.1969; LOS.ANGELES.COUNTY.MUS.-CONTRIB.SCI; USA; 1969(6), NUM. 0164, P. 1 A 28Miscellaneous