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

A TETRAHEDRAL MEGASPORE ARRANGEMENT IN A SEED FERN OVULE OF PENNSYLVANIAN AGESCHABILION JT; BROTZMAN NC.1979; AMER. J. BOT.; USA; DA. 1979; VOL. 66; NO 6; PP. 744-745; BIBL. 17 REF.Article

PALEOZOIC SEED STUDIES:ON THE STRUCTURE OF CONOSTOMA LEPTOSPERMUM N.SP.,AND ALBERTLONGIA INCOSTATA N.GEN.AND SP.TAYLOR TN.1967; PALAEONTOGRAPHICA B; DEU; 1967, VOL. 121, P. 23 A 29Miscellaneous

CONOSTOMA CHAPPELLICUM N. SP., LAGENOSTOMALEAN OVULES FROM KENTUCKY = CONOSTOMA CHAPPELLICUM N.SP., OVULE DE LAGENOSTOMALES DU KENTUCKYSTUBBLEFIELD SP; ROTHWELL GW.1980; J. PALEONTOL.; ISSN 0022-3360; USA; DA. 1980; VOL. 54; NO 5; PP. 1012-1016; BIBL. 12 REF.; 1 PLANCH. ; PL.Article

ON THE STRUCTURAL SIMILARITY OF THE PALEOZOIC OVULES CONOSTOMA PLATYSPERMUM AND C. LEPTOSPERMUMROTWELL GW; TAYLOR TN; CLARKSON C et al.1979; J. PALEONTOL.; USA; DA. 1979; VOL. 53; NO 1; PP. 49-54; BIBL. 12 REF.; 1 ILL.Article

OBSERVATIONS ON CARBONIFEROUS SEEDS OF MITROSPERMUM, CONOSTOMA AND LAGENOSTOMA.LONG AG.1977; TRANS. R. SOC. EDINBURGH; G.B.; DA. 1977; VOL. 70; NO 1-3; PP. 37-61; H.T. 4; BIBL. 28 REF.; 11 ILL.Article