A LOWER PENNSYLVANIAN FLORA FROM UTAH AND ITS STRATIGRAPHIC SIGNIFICANCE.TIDWELL WD.1967; DISSERT. ABSTR. INTERNATION.; USA; 1967(7), VOL. 28, NUM. 0001Miscellaneous

ON PROBABLE AFFINITIES OF VIRACARPON SAHNI FROM THE DECCAN INTERTRAPPEAN FLORA OF INDIANAMBUDIRI EMV; TIDWELL WD.1978; PALAEONTOGRAPHICA, B; DEU; DA. 1978; VOL. 166; NO 1-3; PP. 30-43; H.T. 5; BIBL. 2 P.; 1 ILL.Article

NOTE ON THE DISTRIBUTION AND MORPHOLOGY OF THE FERN GENUS ASTRALOPTERIS.RUSHFORTH SR; TIDWELL WD.1968; BRIGHAM YOUNG UNIV., GEOL. STUD.; 1968(10), VOL. 15, NUM. 0001, P. 109 A 113Miscellaneous

OSMUNDACAULIS WADEI, A NEW OSMUNDACEOUS SPECIES FROM THE MORRISON FORMATION (JURASSIC) OF UTAH.TIDWELL WD; RUSHFORTH SR.1970; BULL. TORREY BOT. CLUB.; USA; 1970(6), VOL. 97, NUM. 0003, P. 137 A 144Miscellaneous

A REVIEW OF THE GENUS PROTOPICEOXYLON WITH EMPHASIS ON NORTH AMERICAN SPECIESMEDLYN DA; TIDWELL WD.1979; CANAD. J. BOT.; CAN; DA. 1979; VOL. 57; NO 13; PP. 1451-1463; BIBL. 2 P.; 36 ILL.Article

SYZYGIOXYLON CHHINDWARENSE, A NEW FOSSIL WOOD FROM THE DECCAN INTERTRAPPEAN SERIES OF INDIA.NAMBUDIRI EMV; TIDWELL WD.1977; GREAT BASIN NATURALIST; U.S.A.; DA. 1977; VOL. 37; NO 2; PP. 241-246; BIBL. 1 P.; 2 ILL.Article

ELAEOCARPUS CHITALEYI, SP. NOV., FROM THE DECCAN INTERTRAPPEN BEDS OF INDIA.NAMBUDIRI EMV; TIDWELL WD.1975; BRIGHAM YOUNG UNIV. GEOL. STUD.; U.S.A.; 1975, VOL. 22, NUM. 0001, P. 29 A 37Serial Issue

CONIFER WOOD FROM THE UPPER JURASSIC OF UTAH. I. XENOXYLON MORRISONENSE SP. NOV.MEDLYN DA; TIDWELL WD.1975; AMER. J. BOT.; USA; 1975, VOL. 62, NUM. 0002, P. 203 A 208Serial Issue

FLORA OT THE MANNING CANYON SHALE. II. LEPIDODENDRALES.TIDWELL WD; MEDLYN DA; SIMPER AD et al.1974; BRIGHAM YOUNG UNIV. GEOL. STUD.; USA; 1974, VOL. 21, NUM. 0003, P. 119 A 146Serial Issue

FOSSIL PALM MATERIALS FROM THE TERTIARY DIPPING VAT FORMATION OF CENTRAL UTAH.TIDWELL WD; MEDLYN DA; THAYN GF et al.1972; GREAT BASIN NATURALIST; USA; 1972, VOL. 32, NUM. 0001, P. 1 A 15Miscellaneous

A FLORA OF ANGIOSPERMOUS LEAVES FROM THE COAL-BEARING FORT UNION FORMATION NEAR BAGGS, WYOMING.ROTH JL JR; TIDWELL WD.1975; GEOL. SOC. AMER., ABSTR. PROGRAMS; U.S.A.; 1975, VOL. 7, NUM. 0007, P. 1252Miscellaneous

CRETACEOUS AND EARLY TERTIARY FLORAS OF THE INTERMOUNTAIN AREA. A SUMMARY.TIDWELL WD; THAYN GF; ROTH JL et al.1976; BEIGHAM YOUNG UNIV., GEOL. STUD.; U.S.A.; DA. 1976; VOL. 22; NO 3; PP. 77-98; BIBL. 3 P.; 6 ILL.Article

ADDITIONAL INFORMATION CONCERNING THE CONTROVERSAL TRIASSIC PLANT: SANMIGUELIA.TIDWELL WD; SIMPER AD; THAYN GF et al.1977; PALAEONTOGRAPHICA, B; ALLEM.; DA. 1977; VOL. 163; NO 5-6; PP. 143-151; H.T. 3; BIBL. 14 REF.; 7 ILL.Article

PALMOXYLON SIMPERI AND PALMOXYLON PRISTINA : TWO PRE-CRETACEOUS ANGIOSPERMS FROM UTAH.TIDWELL WD; RUSHFORTH SR; REVEAL JL et al.1970; SCIENCE; USA; 1970(5), VOL. 168, NUM. 3933, P. 835 A 840Miscellaneous

A C4 PLANT FROM THE PLIOCENENAMBUDIRI EMV; TIDWELL WD; SMITH BN et al.1978; NATURE; GBR; DA. 1978; VOL. 276; NO 5690; PP. 816-817; BIBL. 13 REF.Article