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Friis, Else Marie; Crane, Peter R.; Pedersen, Kaj Raunsgaard; Bengtson, Stefan; Donoghue, Philip C.J.; Grimm, Guido W.; Stampanoni, Marco (novembro de 2007). «Phase-contrast X-ray microtomography links Cretaceous seeds with Gnetales and Bennettitales». Nature. 450 (7169): 549–552. Bibcode:2007Natur.450..549F. ISSN0028-0836. PMID18033296. doi:10.1038/nature06278
Qiu, Y.L.; Lee, J.; Bernasconi-Quadroni, F.; Soltis, D.E.; Soltis, P.S.; Zanis, M.; Zimmer, E.A.; Chen, Z.; Savalainen, V.; Chase, M.W. (1999). «The earliest angiosperms: evidence from mitochondrial, plastid and nuclear genomes». Nature. 402 (6760): 404–407. Bibcode:1999Natur.402..404Q. PMID10586879. doi:10.1038/46536
Coiro, M.; Chomicki, G.; Doyle, J.A. (2018). «Experimental signal dissection and method sensitivity analyses reaffirm the potential of fossils and morphology in the resolution of the relationship of angiosperms and Gnetales». Paleobiology. 44 (3): 490–510. Bibcode:2018Pbio...44..490C. doi:10.1017/pab.2018.23
Samigullin, T.K.; Martin, W.F.; Troitsky, A.V.; Antonov, A.S. (1999). «Molecular data from the chloroplast rpoC1 gene suggest a deep and distinct dichotomy of contemporary spermatophytes into two monophyla: gymnosperms (including Gnetalaes) and angiosperms». Journal of Molecular Evolution. 49 (3): 310–315. Bibcode:1999JMolE..49..310S. PMID10473771. doi:10.1007/PL00006553
Roberts, Emily A.; Martill, David M.; Loveridge, Robert F. (fevereiro de 2020). «Phytogeographical implications of the probable occurrence of the gnetalean plant Welwitschiophyllum in the Late Cretaceous (Cenomanian) of Africa». Proceedings of the Geologists' Association (em inglês). 131 (1): 1–7. Bibcode:2020PrGA..131....1R. doi:10.1016/j.pgeola.2019.10.002
Rydin, C.; Kallersjo, M.; Friist, E.M. (2002). «Seed plant relationships and the systematic position of Gnetales based on nuclear and chloroplast DNA: Conflicting data, rooting problems, and the monophyly of conifers». International Journal of Plant Sciences. 163 (2): 197–214. JSTOR3080238. doi:10.1086/338321
Magallon, S.; Sanderson, M.J. (2002). «Relationships among seed plants inferred from highly conserved genes: sorting conflicting phylogenetic signals among ancient lineages». American Journal of Botany. 89 (12): 1991–2006. JSTOR4122754. PMID21665628. doi:10.3732/ajb.89.12.1991
Loconte, H.; Stevenson, D.W. (1990). «Cladistics of the Spermatophyta». Brittonia. 42 (3): 197–211. JSTOR2807216. doi:10.2307/2807216
Gugerli, F.; Sperisen, C.; Buchler, U.; Brunner, L.; Brodbeck, S.; Palmer, J.D.; Qiu, Y.L. (2001). «The evolutionary split of Pinaceae from other conifers: evidence from an intron loss and a multigene phylogeny». Molecular Phylogenetics and Evolution. 21 (2): 167–175. PMID11697913. doi:10.1006/mpev.2001.1004
Friis, Else Marie; Crane, Peter R.; Pedersen, Kaj Raunsgaard; Bengtson, Stefan; Donoghue, Philip C.J.; Grimm, Guido W.; Stampanoni, Marco (novembro de 2007). «Phase-contrast X-ray microtomography links Cretaceous seeds with Gnetales and Bennettitales». Nature. 450 (7169): 549–552. Bibcode:2007Natur.450..549F. ISSN0028-0836. PMID18033296. doi:10.1038/nature06278
Magallon, S.; Sanderson, M.J. (2002). «Relationships among seed plants inferred from highly conserved genes: sorting conflicting phylogenetic signals among ancient lineages». American Journal of Botany. 89 (12): 1991–2006. JSTOR4122754. PMID21665628. doi:10.3732/ajb.89.12.1991
Sanderson, M.J.; Wojciechowski, M.F.; Hu, J.M.; Sher Khan, T.; Brady, S.G. (2000). «Error, bias, and long-branch attraction in data for two chloroplast photosystem genes in seed plants». Molecular Biology and Evolution. 17 (5): 782–797. PMID10779539. doi:10.1093/oxfordjournals.molbev.a026357
Burleigh, J.G.; Mathews, S. (2007). «Phylogenetic signal in nucleotide data from seed plants: Implications for resolving the seed plant tree of life». American Journal of Botany. 168 (10): 125–135. PMID21652311. doi:10.3732/ajb.91.10.1599
Donoghue, M.J.; Doyle, J.A. (2000). «Seed plant phylogeny: demise of the anthophyte hypothesis?». Current Biology. 10 (3): R106–R109. PMID10679315. doi:10.1016/S0960-9822(00)00304-3
Goremykin, V.; Bobrova, V.; Pahnke, J.; Troitsky, A.; Antonov, A.; Martin, W. (1996). «Noncoding sequences from the slowly evolving chloroplast inverted repeat in addition to rbcL data do not support gnetalean affinities of angiosperms». Molecular Biology and Evolution. 13 (2): 383–396. PMID8587503. doi:10.1093/oxfordjournals.molbev.a025597
Hajibabaei, M.; Xia, J.; Drouin, G. (2006). «Seed plant phylogeny: Gnetophytes are derived conifers and a sister group to Pinaceae». Molecular Phylogenetics and Evolution. 40 (1): 208–217. PMID16621615. doi:10.1016/j.ympev.2006.03.006
Samigullin, T.K.; Martin, W.F.; Troitsky, A.V.; Antonov, A.S. (1999). «Molecular data from the chloroplast rpoC1 gene suggest a deep and distinct dichotomy of contemporary spermatophytes into two monophyla: gymnosperms (including Gnetalaes) and angiosperms». Journal of Molecular Evolution. 49 (3): 310–315. Bibcode:1999JMolE..49..310S. PMID10473771. doi:10.1007/PL00006553
Friis, Else Marie; Crane, Peter R.; Pedersen, Kaj Raunsgaard; Bengtson, Stefan; Donoghue, Philip C.J.; Grimm, Guido W.; Stampanoni, Marco (novembro de 2007). «Phase-contrast X-ray microtomography links Cretaceous seeds with Gnetales and Bennettitales». Nature. 450 (7169): 549–552. Bibcode:2007Natur.450..549F. ISSN0028-0836. PMID18033296. doi:10.1038/nature06278
Coiro, Mario; Roberts, Emily A.; Hofmann, Christa-Ch.; Seyfullah, Leyla J. (14 de dezembro de 2022). «Cutting the long branches: Consilience as a path to unearth the evolutionary history of Gnetales». Frontiers in Ecology and Evolution. 10. 1082639 páginas. ISSN2296-701X. doi:10.3389/fevo.2022.1082639
Friis, Else Marie; Pedersen, Kaj Raunsgaard; Crane, Peter R. (3 de julho de 2014). «Welwitschioid diversity in the Early Cretaceous: evidence from fossil seeds with pollen from Portugal and eastern North America». Grana (em inglês). 53 (3): 175–196. ISSN0017-3134. doi:10.1080/00173134.2014.915980
Yang, Yong; Yang, Zhi; Lin, Longbiao; Wang, Yingwei; Ferguson, David Kay (janeiro de 2023). «A New Gnetalean Macrofossil from the Mid-Jurassic Daohugou Formation». Plants (em inglês). 12 (9). 1749 páginas. ISSN2223-7747. doi:10.3390/plants12091749