Pullaritheca longii gen. nov. and Kerryia mattenii gen. et sp. nov., lower Carboniferous cupules with ovules of the Hydrasperma tenuis-type

[1]  G. Rothwell,et al.  Morphology, Systematics, and Paleoecology of Paleozoic Fossil Plants: Mesoxylon priapi, sp. nov. (Cordaitales) , 1985 .

[2]  L. C. Matten,et al.  THE MEGAGAMETOPHYTE OF HYDRASPERMA TENUIS LONG FROM THE UPPER DEVONIAN OF IRELAND , 1984 .

[3]  Gar W. Rothwell,et al.  Cordaixylon dumusum n.sp. (Cordaitales). I. Vegetative Structures , 1984, Botanical Gazette.

[4]  L. C. Matten,et al.  Studies on the cupulate seed genus Hydrasperma Long from Berwickshire and East Lothian in Scotland and County Kerry in Ireland , 1980 .

[5]  J. M. Schopf.  Unstated Requirements in Nomenclature for Plant Fossils , 1978 .

[6]  W. Williamson.  Flore Carbonifère du Département de la Loire et du Centre de la France , 1877, Nature.

[7]  G. Rothwell,et al.  A monograph of Dolerotheca Halle, and related complex permineralised medullosan pollen organs , 1986, Transactions of the Royal Society of Edinburgh: Earth Sciences.

[8]  A. Scott,et al.  Distribution of anatomically-preserved floras in the Lower Carboniferous in Western Europe , 1984, Transactions of the Royal Society of Edinburgh: Earth Sciences.

[9]  L. C. Matten,et al.  Cupule Organization in Early Seed Plants , 1981 .

[10]  J. G. Long.  The resemblance between the Lower Carboniferous cupules of Hydrasperma cf. tenuis Long and Sphenopteris bifida Lindley and Hutton , 1979, Earth and Environmental Science Transactions of the Royal Society of Edinburgh.

[11]  J. G. Long.  Lower Carboniferous pteridosperm cupules and the origin of angiosperms , 1977, Earth and Environmental Science Transactions of the Royal Society of Edinburgh.

[12]  J. G. Long.  Some Lower Carboniferous pteridosperm cupules bearing ovules and microsporangia , 1977, Earth and Environmental Science Transactions of the Royal Society of Edinburgh.

[13]  J. G. Long.  XV.—Some Pteridosperm Seeds from the Calciferous Sandstone Series of Berwickshire , 1961, Earth and Environmental Science Transactions of the Royal Society of Edinburgh.

[14]  W. Gordon.  XII.—On Tetrastichia bupatides: A Carboniferous Pteridosperm from East Lothian , 1938, Transactions of the Royal Society of Edinburgh.