THE CALLISTOPHYTALES (PTERIDOSPERMOPSIDA): REPRODUCTIVELY SOPHISTICATED PALEOZOIC GYMNOSPERMS = LES CALLISTOPHYTALES (PTERIDOSPERMOPSIDA): GYMNOSPERMES PALEOZOIQUES AU MODE DE REPRODUCTION SOPHISTIQUEROTHWELL GW.1981; REV. PALAEOBOT. PALYNOL.; ISSN 0034-6667; NLD; DA. 1981; VOL. 32; NO 1; PP. 103-121; BIBL. 2 P.; 3 PLANCH. ; PL./ILL.Article

A TECHNIQUE FOR REVEALING THE SURFACE FEATURES OF PERMINERALIZED "COAL-BALL" PLANTS = TECHNIQUE DE MISE EN EVIDENCE DES STRUCTURES DE SURFACE DES PLANTES EN "COAL BALL" MINERALISEESROTHWELL GW.1980; J. PALEONTOL.; ISSN 0022-3360; USA; DA. 1980; VOL. 54; NO 5; PP. 1131-1133; BIBL. 11 REF.Article

DONNEGGIA COMPLURA GEN ET SP. NOV., A FILICALEAN FERN FROM THE UPPER PENNSYLVANIAN OF OHIOROTHWELL GW.1978; CANAD. J. BOT.; CAN; DA. 1978; VOL. 56; NO 24; PP. 3096-3104; ABS. FRE; BIBL. 14 REF.; 3 ILL.Article

PETRIFIED PENNSYLVANIAN AGE PLANTS OF EASTERN OHIO.ROTHWELL GW.1976; OHIO J. SCI.; U.S.A.; DA. 1976; VOL. 76; NO 3; PP. 128-132; BIBL. 9 REF.; 1 ILL.Article

PALAEOSCLEROTIUM PUSILLUM GEN. ET SP. NOV., A FOSSIL EUMYCETE FROM THE PENNSYLVANIAN OF ILLINOISROTHWELL GW.1972; CANAD. J. BOT.; CANADA ; 1972, VOL. 50, NUM. 0011, P. 2353 A 2356Serial Issue

POLLEN ORGANS OF THE PENNSYLVANIAN CALLISTOPHYTACEAE (PTERIDOSPERMOPSIDAROTHWELL GW.1972; AMER. J. BOT.; U.S.A. ; 1972, VOL. 59, NUM. 0010, P. 1Serial Issue

NEW INTERPRETATIONS OF THE EARLIEST CONIFERS = NOUVELLES INTERPRETATIONS DES TOUS PREMIERS CONIFERESROTHWELL GW.1982; REV. PALEOBOT. PALYNOL.; ISSN 0034-6667; NLD; DA. 1982; VOL. 37; NO 1-2; PP. 7-28; BIBL. 4 P.; 3 PLANCH. ; PL./ILL.Article

THE PRIMARY VASCULATURE OF CORDAIANTHUS CONCINNUS.ROTHWELL GW.1977; AMER. J. BOT.; U.S.A.; DA. 1977; VOL. 64; NO 10; PP. 1235-1241; BIBL. 23 REF.; 14 ILL.Article

PRIMARY VASCULATURE AND GYMNOSPERM SYSTEMATICS.ROTHWELL GW.1976; REV. PALAEBOT. PALYNOL.; NETHERL.; DA. 1976; VOL. 22; NO 3; PP. 193-206; BIBL. 1 P. 1/2Article

EVIDENCE OF POLLEN TUBES IN PALEOZOIC PTERIDOSPERMS.ROTHWELL GW.1972; SCIENCE; 1972, VOL. 175, NUM. 4023, P. 772 A 774Miscellaneous

EVIDENCE FOR A POLLINATION-DROP MECHANISM IN PALEOZOIC PTERIDOSPERMS.ROTHWELL GW.1977; SCIENCE; U.S.A.; DA. 1977; VOL. 198; NO 4323; PP. 1251-1252; BIBL. 8 REF.; 1 ILL.Article

A NEW PTEROPSID FRUCTIFICATION FROM THE MIDDLE PENNSYLVANIAN OF KANSAS.ROTHWELL GW.1976; PALEONTOLOGY; G.B.; DA. 1976; VOL. 19; NO 2; PP. 307-315; H.T. 2; BIBL. 23 REF.; 3 ILL.Article

ONTOGENY OF THE PALEOZOIC OVULE, CALLOSPERMARION PUSILLUM.ROTHWELL GW.1971; AMER. J. BOT.; USA; 1971, VOL. 58, NUM. 0008, P. 706 A 715Miscellaneous

EARLY SEED PLANT WIND POLLINATION STUDIES: A COMMENTARY = ETUDES DE LA POLLINISATION PAR LE VENT DES PREMIERES PLANTES A GRAINES: COMMENTAIRESROTHWELL GW; TAYLOR TN.1982; TAXON; ISSN 0040-0262; NLD; DA. 1982; VOL. 31; NO 2; PP. 308-309; BIBL. 2 REF.Article

RHETINOTHECA PATENS N. SP., A MEDULLOSAN POLLEN ORGAN FROM THE UPPER PENNSYLVANIAN OF NORTH AMERICA = RHETINOTHECA PATENS N. SP., UN POLLEN DE MEDULLOSA DU PENNSYLVANIEN SUPERIEUR D'AMERIQUE DU NORDROTHWELL GW; MICKLE JE.1982; REV. PALEOBOT. PALYNOL.; ISSN 0034-6667; NLD; DA. 1982; VOL. 36; NO 3-4; PP. 361-374; BIBL. 21 REF.; 3 PLANCH. ; PL./ILL.Article

MITROSPERNUM VINCULUM SP. NOV., A CARDIOCARPALEAN OVULE FROM THE UPPER PENNSYLVANIAN OF OHIO = MITROSPERMUM VINCULUM SP. NOV., UN OVULE CARDIOCARPALEEN DU PENNSYLVANIEN SUPERIEUR DE L'OHIOGROVE GG; ROTHWELL GW.1980; AM. J. BOT.; ISSN 0002-9122; USA; DA. 1980; VOL. 67; NO 7; PP. 1051-1058; BIBL. 17 REF.Article

BENSONIOTHECA, A NEW NAME FOR HETEROTHECA BENSONMICKLE JE; ROTHWELL GW.1979; TAXON; NLD; DA. 1979; VOL. 28; NO 5-6; PP. 591; BIBL. 3 REF.Article

ANATOMICALLY PRESERVED PLANTS FROM THE MIDDLE EOCENE (ALLENBY FORMATION) OF BRITISH COLUMBIA.BASINGER JF; ROTHWELL GW.1977; CANAD. J. BOT.; CANADA; DA. 1977; VOL. 55; NO 14; PP. 1984-1990; ABS. FR.; BIBL. 2 P.; 1 ILL.Article

PAINTS FOR BUILDINGS, THE POTENTIAL AND THE PERFORMANCEWHITELEY P; ROTHWELL GW.1975; J. OIL COLOUR CHEMIST'S ASS.; G.B.; DA. 1975; VOL. 58; NO 12; PP. 448-456; ABS. FR. ALLEM.; BIBL. 6 REF.Article

STEWARTIOTHECA GEN. N. AND THE NATURE AND ORIGIN OF COMPLEX PERMINERALIZED MEDULLOSAN POLLEN ORGANSEGGERT DA; ROTHWELL GW.1979; AMER. J. BOT.; USA; DA. 1979; VOL. 66; NO 7; PP. 851-866; BIBL. 11 REF.Article

CARBONIFEROUS PTERIDOSPERM STUDIES: MORPHOLOGY AND ANATOMY OF SCHOPFIASTRUM DECUSSATUMROTHWELL GW; TAYLOR TN.1972; CANAD. J. BOT.; CANADA ; 1972, VOL. 50, NUM. 0012, P. 2649 A 2658Serial Issue

WEISSISTACHYS KENTUCKIENSIS. A NEW NAME FOR WEISSIA KENTUCHIENSE ROTHWELL AND TAYLOR.ROTHWELL GW; TAYLOR TN.1971; BOT. GAZ; USA; 1971, VOL. 132, NUM. 0004, P. 371 A 372Miscellaneous

A CONOSTOMA WITH A TENTACULAR INTEGUMENT FROM THE PENNSYLVANIAN OF ILLINOIS. (ABSTRACT).ROTHWELL GW; EGGERT DA.1970; AMER. J. BOT.; USA; 1970(7), VOL. 57, NUM. 0006-002Miscellaneous

STEM-ROOT TRANSITION OF AN UPPER PENNSYLVANIAN WOODY LYCOPSIDPIGG KB; ROTHWELL GW.1979; AMER. J. BOT.; USA; DA. 1979; VOL. 66; NO 8; PP. 914-924; BIBL. 28 REF.Article

STUDIES OF PALEOZOIC CALAMITEAN CONES: WEISSIA KENTUCKIENSE GEN. ET SP. NOV.ROTHWELL GW; TAYLOR TN.1971; BOT. GAZ; USA; 1971, VOL. 132, NUM. 0003, P. 215 A 224Miscellaneous