FUNCTIONAL MORPHOLOGY OF THE RHYNCHOSAUR SKULL.SILL WD.1971; FORMA ET FUNCTIO; DEU; 1971, NUM. 0004, P. 303 A 318Miscellaneous

THE TETRAPOD-BEARING CONTINENTAL TRIASSIC SEDIMENTS OF SOUTH AMERICA.SILL WD.1969; AMER. J. SCI.; USA; 1969, VOL. 267, NUM. 0007, P. 805 A 821Miscellaneous

GEOLOGY AND FAUNA OF A NEW PLIOCENE LOCALITY IN NORTH-WESTERN KENYA.PATTERSON B; BEHRENSMEYER AK; SILL WD et al.1970; NATURE-G.B.; 1970(6), VOL. 226, NUM. 5249, P. 918 A 921Miscellaneous