Literature

Authors	Year	Title
J. Hilton, Bateman R. M.	2006	Pteridosperms are the backbone of seed-plant phylogeny
G. R. Hernandez-Castillo, Stockey, R. A., Rothwell, G. W., Mapes, G.	2009	Reconstructing Emporia lockardii (Voltziales: Emporiaceae) and initial thoughts on palaeozoic conifer ecology
G. R. Hernandez-Castillo, Rothwell, G. W., Stockey, R. A., Mapes, G.	2003	Growth architecture of Thucydia mahoningensis, a model for primitive walchian conifer plants
G. R. Hernandez-Castillo, Rothwell, G. W., Mapes, G.	2001	THUCYDIACEAE Fam. nov., with a review and reevaluation of paleozoic walchian conifers
O. Heer	1876	Ueber permische Pflanzen von Fünkirchen in Ungarn
F. Hasibuan, Andi-Mangga, S., Suyoko	2000	Stereochia semi-reticulatus (Martin) dari Formasi Mengkarang, Jambi, Sumatera
J. Hart	1987	A cladistic analysis of conifers: premininary results
T. G. Halle	1927	Palaeozoic plants from Central Shansi
H. Robert Göppert	1864	Die fossile Flora der Permischen Formation
H. Robert Göppert	1865	Die fossile Flora der Permischen Formation
F. Gugerli, Sperisen, C., Buchler, U., Brunner, I., S., B., J.D., P., Y.L., Q.	2001	The evolutionary split of Pinaceae from other conifers: evidence from an intron loss and a miltigene phylogeny
F. Cyrille Grand'Eury	1877	Mémoires sur la flore Carbonifère du Département de la Loire et du centre de la France, êtudiée aux trois points de vue botanique, stratigraphic et géognostique
P. A. Goloboff	1999	NONA (NONAME), ver. 2
I. G. Glasspool, Hilton, J., Collinson, M. E., Wang, S. J.	2004	Defining the gigantopterid concept: a reinvestigation of Gigantopteris (Megalopteris) nicotianaefolia Schenck and its taxonomic implications
D. S. Gernandt, Magallon, S., G. Lopez, G., O. Flores, Z., Willyard, A., Liston, A.	2008	Use of simultaneous analyses to guide fossil-based calibrations of Pinaceae Phylogeny
B. Geng, Hilton J.	1999	New coniferophytes ovulate structures from the Early Permian of China
R. A. Gastaldo, DiMichele, W. A., Pfefferkorn, H. W.	1996	Out of the icehouse into the greenhouse: A Late Paleozoic Analog for modern global vegetational change
Z. Gao, Thomas B. A.	1989	A review of fossil cycad megasporophylls, with new evidence of Crossazamia Pomel and its associated leaves from the Lower Permian of Taiyuan, China
M. W. Frohlich, Chase M. W.	2007	After a dozen years of progress the origin of angiosperms is still a great mystery
R. Florin	1927	Paleozoic conifers
R. Florin	1938	Die Koniferen des Oberkarbons und des unteren Perms I-VII
R. Florin	1940	On Walkomia n. gen., a genus of Upper Palaeozoic conifers from Gondwanaland
R. Florin	1940	Die Koniferen des Oberkarbons und des Unteren Perms. Fünftes Heft
R. Florin	1950	Upper carboniferous and lower permian conifers
R. Florin	1951	Evolution in Cordaites and conifers
T. C. Fischer, Butzmann, R., Kerp, J. H. F., E., K., Meller, B., Van Cittert, J. H. A. van	2008	A remarkable gymnosperm flora from the Permian of Bletterbach (Dolomites, N-Italy) - 12th International Palynological Congress & 6th International Organisation of Palaeobotany Conference, 30.08.-5.09.2008, Bonn
E. Feruglio	1934	Fossili liassici della Valle del Rio Genoa
E. Feruglio	1942	La flora liásica del valle del Rio Genoa (Patagonia). Ginkgoales et Gymnospermae Incertae sedis
B. C. J. Dumortier	1829	Analyse des familles des plantes, avec l'indication des principaux genres qui s'y rattachent
J. A. Doyle	1996	Seedplant phylogeny and the relationships of the Gnetales
A. B. Doweld	2001	Prosyllabus Tracheophytorum. Tentamen systematis plantarum vascularium (Tracheophyta)
J. Doubinger, Vetter, P., Langiaux, J., Galtier, J., Broutin, J.	1995	La flore fossile du bassin houiller de Saint-Étienne
W. A. DiMichele, Mamay, S. H., Chaney, D. S., Hook, R. W., W. Nelson, J.	2001	An Early Permian flora with Late Permian and Mesozoic affinities from North-Central Texas
W. A. DiMichele, Tabor, N. J., Chaney, D. S., Nelson, W. J.	2006	From wetlands to wet spots; environmental tracking and the fate of Carboniferous elements in Early Permian tropical floras
T. Delevoryas, Morgan J.	1954	A New Pteridosperm from Upper Pennsylvanian Deposits of North America
T. Delevoryas, Hope R. C.	1973	Fertile coniferophyte remains from the Late Triassic Deep River Basin, north Carolina
T. Delevoryas	1956	The shoot apex of Callistophyton poroxyloides
T. Delevoryas, Hope R. C.	1987	Further observations on the Late Triassic conifers Compsostrobus neoreticus and Voltzia andrewsii
C. Darwin	1845	Journal of researches into the natural history and geology of the countries visited during the voyage of H.M.S. Beagle round the world.
R. Cuneo	1985	Ejemplares fertiles de Genoites patagonica Feruglio (Buriadiaceae, Coniferopsida?) del Permico de Chubut, Republica Argentina
C. J. Cleal, Shute, C., Hilton, J., Carter, J.	2009	A revision of the Pennsylvanian-aged Eremopteris-bearing seed-plant
C. J. Cleal	1993	Gymnospermophyta
S. M. Chaw, Zharkikh, A., Sung, H. M., Lau, T. C., Li, W. H.	1997	Molecular phylogeny of extant gymnosperms and seed plant evolution: analysis of nuclear 18S r RNA sequences
G. Thomas Burnett	1835	Outlines of Botany, including a General history of the Vegetable Kingdom, in which plants are arranged according to the system of natural affinities
A. Brongniart	1828	Essai d'une Flore du grès bigarré
A. Brongniart	1828	Végétaux
C. F. W. Braun	1847	Die fossilen Gewächse aus den Gränzschichten zwischen dem Lias und Keuper des neu aufgefundenen Pflanzenlagers in dem Steinbruch von Veitlahm bei Culmbach
L. M. Bowe, Coat, G., dePamphilis, C. W.	2000	Phylogeny of the seed plants based on all three genomic compartments: extant gymnosperms are monophyletic and a close Gnetales-conifer relationship
M. Booi, van Waveren, I. M., Van Cittert, J. H. A. van, de Boer, P. L.	2008	New material of Macralethopteris from the Early Permian Jambi flora (Middle Sumatra, Indonesia) and its palaeoecological implications
M. Booi, van Waveren, I. M., Van Cittert, J. H. A. van	2009	Comia and Rhachiphyllum from the Early Permian of Sumatra, Indonesia

Authors