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Suggested Angiosperm Ancestors

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Book cover The Dawn Angiosperms

Part of the book series: Lecture Notes in Earth Sciences ((LNEARTH,volume 121))

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Abstract

There have been many proposals of candidates for the ancestors or closest relatives of angiosperms. Some of the currently more frequently cited examples are introduced here. Although none of them has been confirmed to be closely related to angiosperms, a comparison between them and angiosperms helps to identify where the problem and gaps in knowledge are. It is these candidates and their possible relationships to angiosperms that compose the foundation on which the current systematics of seed plants is based. Understanding them is also helpful to make a balanced judgment of the point of view in this book.

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References

  • Friedman WE (1992a) Double fertilization in nonflowering seed plants. Intl Rev Cytol 140:319–355

    Article  Google Scholar 

  • Friedman WE (1992b) Evidence of a pre-angiosperm origin of endosperm: implications for the evolution of flowering plants. Science 255:336–339

    Article  Google Scholar 

  • Crane PR (1986) The morphology and relationships of the Bennettitales. In: Spicer RA, Thomas BA, eds. Systematic and taxonomic approaches in palaeobotany. Clarendon Press, Oxford

    Google Scholar 

  • Barbacka M, Boka K (2000a) The stomatal ontogeny and structure of the Liassic pteridosperm Sagenopteris (Caytoniales) from Hungary. Intl J Plant Sci 161:149–157

    Article  Google Scholar 

  • Barbacka M, Boka K (2000b) A new early Liassic Caytoniales fructification from Hungary. Acta Palaeobot 40:85–111

    Google Scholar 

  • Krassilov VA (1977b) Contributions to the knowledge of the Caytoniales. Rev Palaeobot Palyn 24:155–178

    Article  Google Scholar 

  • Rothwell GW, Serbet R (1994) Lignophyte phylogeny and the evolution of Spermatophytes: a numerical cladistic analysis. Syst Bot 19:443–482

    Article  Google Scholar 

  • Krassilov VA (1975) Dirhopalostachyaceae – a new family of proangiosperms and its bearing on the problem of angiosperm ancestry. Paläontogr B 153:100–110

    Google Scholar 

  • Asama K (1982) Evolution and phylogeny of vascular plants based on the principles of growth retardation. Part 5. Origin of angiosperms inferred from the evolution of leaf form. Bull Nat Sci Mus Tokyo Ser C 8:43–58

    Google Scholar 

  • Li H, Taylor EL, Taylor TN (1996) Permian vessel elements. Science 271:188–189

    Article  Google Scholar 

  • Yang Y, Fu DZ, Wen LH (2000) On double fertilization in Ephedra. Adv Plant Sci 3:67–74

    Google Scholar 

  • Wieland GR (1899a) A study of some American fossil cycads. Parts I. The male flower of Cycadeoidea. Am J Sci 7:219–226

    Article  Google Scholar 

  • Wieland GR (1899b) A study of some American fossil cycads. Parts II. The leaf structure of Cycadeoidea. Am J Sci 7:305–308

    Article  Google Scholar 

  • Wieland GR (1899c) A study of some American fossil cycads. Parts III. The female fructification of Cycadeoidea. Am J Sci 7:383–391

    Article  Google Scholar 

  • Nixon KC, Crepet WL, Stevenson D, Friis EM (1994) A reevaluation of seed plant phylogeny. Ann Miss Bot Gard 81:484–533

    Article  Google Scholar 

  • Brown RM (1956) Palm-like plants from the Dolores Formation (Triassic), southwestern Colorado. US Geol Surv Prof Paper 274H:205–209

    Google Scholar 

  • Reymanowna M (1973) The Jurassic flora from Grojec near Krakow in Poland, Part II: Caytoniales and the anatomy of Caytonia. Acta Palaeobot 14:46–87

    Google Scholar 

  • Li H, Tian B, Taylor EL, Taylor TN (1994) Foliar anatomy of Gigantonoclea guizhouensis (Gigantopteridales) from the Upper Permian of Guizhou Province, China. Am J Bot 81:678–689

    Article  Google Scholar 

  • Thompson WP (1916) The morphology and affinities of Gnetum. Am J Bot 3:135–184

    Article  Google Scholar 

  • Guo S-X, Sha J-G, Bian L-Z, Qiu Y-L (2009) Male spike strobiles with Gnetum affinity from the Early Cretaceous in western Liaoning, Northeast China. J Syst Evol 47:93–102

    Article  Google Scholar 

  • Wang Z-Q (1999) Gigantonoclea: an enigmatic Permian plant from North China. Palaeontology 42:329–373

    Article  Google Scholar 

  • Wang X, Zheng SL (2010) Whole fossil plants of Ephedra and their implications on the morphology, ecology and evolution of Ephedraceae (Gnetales). Chin Sci Bull 55:1511–1519

    Article  Google Scholar 

  • Sun G, Zheng S, Dilcher D, Wang Y, Mei S (2001) Early angiosperms and their associated plants from Western Liaoning, China. Shanghai Technology & Education Press, Shanghai

    Google Scholar 

  • Arber EAN, Parkin J (1907) On the origin of the angiosperms. Bot J Linn Soc 38:29–80

    Article  Google Scholar 

  • Retallack G, Dilcher DL (1981b) Arguments for a glossopterid ancestry of angiosperms. Paleobiology 7:54–67

    Google Scholar 

  • Maheshwari HK (2007) Deciphering angiosperm origins. Curr Sci 92:606–611

    Google Scholar 

  • Harris TM (1964) Caytoniales, cycadales & pteridosperms. Trustees of the British Museum (Natural History), London

    Google Scholar 

  • Bonde SD, Varghese P, Kumaran KPN, Shindikar MR, Garmre PG (2004) Fossil chromosomes in an extinct Gondwanan seed plant (Pentoxylon). Curr Sci 87:865–866

    Google Scholar 

  • Harris TM (1967) Williamsonia gigas. Phytomorphology 17:359–364

    Google Scholar 

  • Friis EM, Pedersen KR, Crane PR (2006) Cretaceous angiosperm flowers: innovation and evolution in plant reproduction. Palaeogeo Palaeoclim Palaeoecol 232:251–293

    Article  Google Scholar 

  • Carlquist S (1996) Wood anatomy of primitive angiosperms: new perspectives and syntheses. In: Hickey LJ, Taylor DW, eds. Flowering plant origin, evolution & phylogeny. Chapman and Hall, New York, NY, pp 68–90

    Chapter  Google Scholar 

  • Taylor EL, Taylor TN, Kerp H, Hermsen EJ (2006b) Mesozoic seed ferns: old paradigms, new discoveries. J Torrey Bot Soc 133:62–82

    Article  Google Scholar 

  • Wang X, Zheng SL, Jin JH (2010) Structure and relationships of Problematospermum, an enigmatic seed from the Jurassic of China. Intl J Plant Sci 171:447–456

    Article  Google Scholar 

  • Rothwell GW, Crepet WL, Stockey RA (2009) Is the anthophyte hypothesis alive and well? New evidence from the reproductive structures of Bennettitales. Am J Bot 96:296–322

    Article  Google Scholar 

  • Duan S (1998) The oldest angiosperm – a tricarpous female reproductive fossil from western Liaoning Province, NE China. Sci China D 41:14–20

    Article  Google Scholar 

  • Friedman WE (1990) Sexual reproduction in Ephedra nevadensis (Ephedraceae): further evidence of double fertilization in a nonflowering seed plant. Am J Bot 77:1582–1598

    Article  Google Scholar 

  • Biswas C, Johri BM (1997) The gymnosperms. Springer, Berlin

    Google Scholar 

  • Liu Z (1988) Plant fossils from the Zhidan group between Huating and Longxian, southwestern part of Ordos basin. Bull Xi’an Inst Geol Min Res, Chin Acad Geol Sci 24:91–100

    Google Scholar 

  • Soltis DE, Bell CD, Kim S, Soltis PS (2004) The origin and early evolution of angiosperms. Ann New York Acad Sci 1133:2–25

    Google Scholar 

  • Taylor TN, Archangelsky S (1985) The Cretaceous pteridosperms of Ruflorinia and Ktalenia and implication on cupule and carpel evolution. Am J Bot 72:1842–1853

    Article  Google Scholar 

  • Sun G, Ji Q, Dilcher DL, Zheng S, Nixon KC, Wang X (2002) Archaefructaceae, a new basal angiosperm family. Science 296:899–904

    Article  Google Scholar 

  • Tidwell WD, Simper AD, Thayn GF (1977) Additional information regarding the controversial Triassic plant, Sanmiguelia. Paläontogr B 163:143–151

    Google Scholar 

  • Doyle JA, Donoghue MJ (1987) The origin of angiosperms: a cladistic approach. In: Friis EM, Chaloner WG, Crane PR, eds. The origin of the angiosperms and their biological consequences. Cambridge University Press, Cambridge

    Google Scholar 

  • Delevoryas T (1969) Glossopterid leaves from the Middle Jurassic of Oaxaca, Mexico. Science 165:895–896

    Article  Google Scholar 

  • Li H, Taylor DW (1999) Vessel-bearing stems of Vasovinea tianii gen. et sp. nov. (Gigantopteridales) from the Upper Permian of Guizhou Province, China. Am J Bot 86:1563–1575

    Article  Google Scholar 

  • Wu S-Q (1999) A preliminary study of the Jehol flora from the western Liaoning. Palaeoworld 11:7–57

    Google Scholar 

  • Friedman WE (1993) The evolutionary history of the seed plant male gametophyte. Trends Ecol Evol 8:15–21

    Article  Google Scholar 

  • Li X, Yao Z (1983) Fructifications of gigantopterids from South China. Paläontogr B 185:11–26

    Google Scholar 

  • Rydin C, Friis EM (2005) Pollen germination in Welwitschia mirabilis Hook. f.: differences between the polyplicate pollen producing genera of the Gnetales. Grana 44:137–141

    Article  Google Scholar 

  • Klavins SD, Taylor TN, Taylor EL (2002) Anatomy of Umkomasia (Corystospermales) from the Triassic of Antarctica. Am J Bot 89:664–676

    Article  Google Scholar 

  • Sun G, Dilcher DL, Zheng S-L, Zhou ZK (1998) In search of the first flower: a Jurassic angiosperm, Archaefructus, from Northeast China. Science 282:1692–1695

    Article  Google Scholar 

  • Krassilov VA (1977a) The origin of angiosperms. Bot Rev 43:143–176

    Article  Google Scholar 

  • Leng Q, Friis EM (2003) Sinocarpus decussatus gen. et sp. nov., a new angiosperm with basally syncarpous fruits from the Yixian Formation of Northeast China. Plant Syst Evol 241:77–88

    Article  Google Scholar 

  • Wang W-L, Zhang H, Zhang L-J, Zheng S-L, Yang F-L, Li Z-T, Zheng Y-J, Ding Q-H (2004) Standard sections of Tuchengzi stage and Yixian stage and their stratigraphy, palaeontology and tectonic-volcanic actions. Geological Publishing House, Beijing

    Google Scholar 

  • Taylor EL (1996) Enigmatic gymnosperms? Structurally preserved Permian and Triassic seed ferns from Antarctica. Rev Palaeobot Palyn 90:303–318

    Article  Google Scholar 

  • Taylor EL, Taylor TN, Ryberg PE, eds (2007) Ovule-bearing organs of the glossopterid seed ferns from the Late Permian of the Beardmore Glacier region, USGS Open-File Reports 2007–1047(082) Antarctica: 1–4

    Google Scholar 

  • Tao JR, Yang Y (2003) Alloephedra xingxueii gen. et sp. nov., an Early Cretaceous member of Ephedraceae from Dalazi Formation in Yanji Basin, Jilin Province of China. Acta Palaeont Sin 42:208–215

    Google Scholar 

  • Cornet B (1986) The leaf venation and reproductive structures of a late Triassic angiosperm, Sanmiguelia lewisii. Evol Theo 7:231–308

    Google Scholar 

  • Taylor DW, Li H, Dahl J, Fago FJ, Zinniker D, Moldowan JM (2006a) Biogeochemical evidence for the presence of the angiosperm molecular fossil oleanane in Paleozoic and Mesozoic non-angiospermous fossils. Paleobiology 32:179–190

    Article  Google Scholar 

  • Harris TM (1933) A new member of the Caytoniales. New Phytol 32:97–114

    Article  Google Scholar 

  • Thomas HH (1925) The Caytoniales, a new group of angiospermous plants from the Jurassic rocks of Yorkshire. Phil Trans Roy Soc London B 213:299–363

    Article  Google Scholar 

  • Nishida H, Pigg KB, Kudo K, Rigby JF (2007) New evidence of reproductive organs of Glossopteris based on permineralized fossils from Queensland, Australia. I. Ovulate organ Homevaleia gen. nov. J Plant Res 120:539–549

    Article  Google Scholar 

  • Zhang Y-L, Xi Y-Z (1983) Studies on the pollen morphology of Chinese Ephedra. Acta Bot Sin 25:420–425

    Google Scholar 

  • Wang X, Zheng S (2009) The earliest normal flower from Liaoning Province, China. J Integr Plant Biol 51:800–811

    Article  Google Scholar 

  • Crane PR (1985) Phylogenetic analysis of seed plants and the origin of angiosperms. Ann Miss Bot Gard 72:716–793

    Article  Google Scholar 

  • Friedman WE (1991) Double fertilization in Ephedra trifurca, a non-flowering seed plant: the relationship between fertilization events and the cell cycle. Protoplasma 165:106–120

    Article  Google Scholar 

  • Crane PR (1996) The fossil history of Gnetales. Intl J Plant Sci 157:S50–S57

    Article  Google Scholar 

  • Harris TM (1969) Bennettitales. Trustees of the British Museum (Natural History), London

    Google Scholar 

  • Tekleva MV, Krassilov VA (2009) Comparative pollen morphology and ultrastructure of modern and fossil gnetophytes. Rev Palaeobot Palyn 156:130–138

    Article  Google Scholar 

  • Hill CR, Crane PR (1982) Evolutionary cladistics and the origin of angiosperms. In: Joysey KA, Friday AE, eds. Problems of phylogenetic reconstruction, Proceedings of the systematics association symposium, Cambridge, 1980. Academic Press, New York, NY

    Google Scholar 

  • Eames AJ (1952 ) The relationships of ephedrales. Phytomorph 2:79–100

    Google Scholar 

  • Chamberlain CJ (1957) Gymnosperms, structure and evolution. Johnson Reprint Corporation, New York, NY

    Google Scholar 

  • Soltis DE, Soltis PS, Zanis M (2002) Phylogeny of seed plants based on eight genes. Am J Bot 89:1670–1681

    Article  Google Scholar 

  • Crane PR, Herendeen PS (2009) Bennettitales from the Grisethrope Bed (Middle Jurassic) at Cayton Bay, Yorkshire, UK. Am J Bot 96:284–295

    Article  Google Scholar 

  • Krassilov VA (1984) New paleobotanical data on origin and early evolution of angiospermy. Ann Miss Bot Gard 71:577–592

    Article  Google Scholar 

  • Zan S, Axsmith BJ, Fraser NC, Liu F, Xing D (2008) New evidence for laurasian corystosperms: Umkomasia from the Upper Triassic of Northern China. Rev Palaeobot Palyn 149:202–207

    Article  Google Scholar 

  • Axsmith BJ, Taylor EL, Taylor TN, Cuneo NR (2000) New perspectives on the Mesozoic seed fern order Corystospermales based on attached organs from the Triassic of Antarctica. Am J Bot 87:757–768

    Article  Google Scholar 

  • Ickert-Bond SM, Skvarla JJ, Chissoe WF (2003) Pollen dimorphism in Ephedra L. (Ephedraceae). Rev Palaeobot Palyn 124:325–334

    Article  Google Scholar 

  • Dilcher DL, Bernardes-De-Oliveira ME, Pons D, Lott TA (2005) Welwitschiaceae from the Lower Cretaceous of northeastern Brazil. Am J Bot 92:1294–1310

    Article  Google Scholar 

  • Rothwell GW, Stockey RA (2002) Anatomically preserved Cycadeoidea (Cycadeoidaceae), with a reevaluation of systematic characters for the seed cones of Bennettitales. Am J Bot 89:1447–1458

    Article  Google Scholar 

  • Cesari SN, Parica CA, Remesal MB, Salani FM (1998) First evidence of Pentoxylales in Antarctica. Cret Res 19:733–743

    Article  Google Scholar 

  • Delevoryas T (1962) Morphology and evolution of fossil plants. Holt, Rinehart and Winston Inc., New York, NY

    Google Scholar 

  • Holmes WBK (1987) New corystosperm ovulate fructifications from the Middle Triassic of eastern Australia. Alcheringa 11:165–173

    Article  Google Scholar 

  • Pedersen KR, Crane PR, Friis EM (1989b) The morphology and phylogenetic significance of Vardekloeftia Harris (Bennettitales). Rev Palaeobot Palyn 60:7–24

    Article  Google Scholar 

  • Ash SR (1976) Occurrence of the controversial plant fossil Sanmiguelia in the Upper Triassic of Texas. J Paleontol 50:799–804

    Google Scholar 

  • Li Z-M (1992) The reconstruction of a new member of the gigantopterids from coal balls of China. Cathaya 4:161–178

    Google Scholar 

  • Harris TM (1944) A revision of Williamsoniella. Phil Trans Roy Soc London B 231:313–328

    Article  Google Scholar 

  • Qiu YL, Li LB, Wang B, Chen ZD, Dombrovska O, Lee J, Kent L, Li RQ, Jobson RW, Hendry TA, Taylor DW, Testa CM, Ambros M (2007) A nonflowering land plant phylogeny inferred from nucleotide sequences of seven chloroplast, mitochondrial, and nuclear genes. Intl J Plant Sci 168:691–708

    Article  Google Scholar 

  • Li H, Taylor DW (1998) Aculeovinea yunguiensis gen. et sp. nov. (Gigantopteridales), a new taxon of gigantopterid stem from the Upper Permian of Guizhou Province, China. Intl J Plant Sci 159:1023–1033

    Article  Google Scholar 

  • Ye M-N, Liu X-Y, Huang G-Q, Chen L-X, Peng S-J, Xu A-F, Zheng B-X (1986) Late Triassic and Early-Middle Jurassic fossil plants from northeastern Sichuan. Anhui Science and Technology Publishing House, Hefei

    Google Scholar 

  • Rydin C, Korall P (2009) Evolutionary relationships in Ephedra (Gnetales), with implications for seed plant phylogeny. Intl J Plant Sci 170:1031–1043

    Article  Google Scholar 

  • Friedman WE, Williams JH (2004) Developmental evolution of the sexual process in ancient flowering plant lineages. Plant Cell 16:S119–132

    Article  Google Scholar 

  • Li N, Li Y, Wang L-X, Zheng S-L, Zhang W (2004) A new Weltrichia Braun in north China with a special bennettitalean male reproductive organ. Acta Bot Sin 46:1269–1275

    Google Scholar 

  • Martens P (1971) Les gnetophytes. Gebrüder Bornträger, Berlin

    Google Scholar 

  • Arber EAN, Parkin J (1908) Studies on the evolution of the angiosperms: the relationship of the angiosperms to the Gnetales. Ann Bot os-22:489–515

    Google Scholar 

  • Raghavan V (2005) Double fertilization: embryo and endosperm development in flowering plants. Springer, Berlin

    Google Scholar 

  • Cornet B (1989b) The reproductive morphology and biology of Sanmiguelia lewisii, and its bearing on angiosperm evolution in the late Triassic. Evol Trends Plants 3:25–51

    Google Scholar 

  • Liu X-Q, Li C-S, Wang Y-F (2006b) Plants of Leptostrobus Heer (Czekanowkiales) from the Early Cretaceous and Late Triassic of China, with discussion of the genus. J Integr Plant Biol 48:137–147

    Article  Google Scholar 

  • Doyle JA, Donoghue MJ (1986a) Seed plant phylogeny and the origin of angiosperms: an experimental cladistic approach. Bot Rev 52:321–431

    Article  Google Scholar 

  • Doyle JA, Donoghue MJ (1986b) Relationships of angiosperms and Gnetales: a numerical cladistic analysis. In: Spicer RA, Thomas BA, eds. Systematic and taxonomic approaches in palaeobotany. Clarendon Press, Oxford

    Google Scholar 

  • Rydin C, Mohr B, Friis EM (2003) Cratonia cotyledon gen. et sp. nov.: a unique Cretaceous seedling related to Welwitschia. Proc Roy Soc B 270:S29–S32

    Article  Google Scholar 

  • Knowlton FH (1925) The possible origin of the angiosperms. Science 61:568–570

    Article  Google Scholar 

  • Doyle JA (2008) Integrating molecular phylogenetic and paleobotanical evidence on origin of the flower. Intl J Plant Sci 169:816–843

    Article  Google Scholar 

  • Doyle JA (2006) Seed ferns and the origin of angiosperms. J Torrey Bot Soc 133:169–209

    Article  Google Scholar 

  • Glasspool I, Hilton J, Collinson ME, Wang S-J (2004) Defining the gigantopterid concept: a reinvestigation of Gigantopteris (Megalopteris) nicotianaefolia Schenk and its taxonomic implications. Palaeontology 47:1339–1361

    Article  Google Scholar 

  • Bierhorst DW (1971) Morphology of vascular plants. Macmillan Company, New York, NY

    Google Scholar 

  • Rydin C, Pedersen KJ, Friis EM (2004) On the evolutionary history of Ephedra: Cretaceous fossils and extant molecules. Proc Nat Acad Sci USA 101:16571–16576

    Article  Google Scholar 

  • Doyle JA (1998) Molecules, morphology, fossils, and the relationship of angiosperms and Gnetales. Mol Phyl Evol 9:448–462

    Article  Google Scholar 

  • Krassilov V (1973a) Mesozoic plants and the problem of angiosperm ancestry. Lethaia 6:163–178

    Article  Google Scholar 

  • Krassilov VA (1973b) The Jurassic disseminules with pappus and their bearing on the problem of angiosperm ancestry. Geophytology 3:1–4

    Google Scholar 

  • Yang Y, Geng B-Y, Dilcher DL, Chen Z-D, Lott TA (2005) Morphology and affinities of an Early Cretaceous Ephedra (Ephedraceae) from China. Am J Bot 92:231–241

    Article  Google Scholar 

  • Brenner GJ (1976) Middle Cretaceous floral province and early migrations of angiosperms. In: Beck CB, ed. Origin and early evolution of angiosperms. Columbia University Press, New York, NY

    Google Scholar 

  • Eames AJ (1961) Morphology of the angiosperms. McGraw-Hill Book Company Inc., New York, NY

    Google Scholar 

  • Hughes NF (1994) The enigma of angiosperm origins. Cambridge University Press, Cambridge

    Google Scholar 

  • Rydin C, Pedersen KR, Crane PR, Friis E (2006a) Former diversity of Ephedra (Gnetales): evidence from Early Cretaceous seeds from Portugal and North America. Ann Bot 98:123–140

    Article  Google Scholar 

  • Taylor EL, Taylor TN (2009) Seed ferns from the late Paleozoic and Mesozoic: any angiosperm ancestors lurking there? Am J Bot 96:237–251

    Article  Google Scholar 

  • Friis EM, Pedersen KR, Crane PR (2009) Early Cretaceous mesofossils from Portugal and eastern North America related to the Bennettitales-Erdtmanithecales-Gnetales group. Am J Bot 96:252–283

    Article  Google Scholar 

  • Frohlich MW, Parker DS (2000) The mostly male theory of flower evolutionary origins: from genes to fossils. Syst Bot 25:155–170

    Article  Google Scholar 

  • Taylor TN, Del Fueyo GM, Taylor EL (1994) Permineralized seed fern cupules from the Triassic of Antarctica: implications for cupule and carpel evolution. Am J Bot 81:666–677

    Article  Google Scholar 

  • Frohlich MW (2003) An evolutionary scenario for the origin of flowers. Nat Rev Gen 4:559–566

    Article  Google Scholar 

  • Harris TM (1940) Caytonia. Ann Bot 4:713–734

    Article  Google Scholar 

  • Kirchner M, Müller A (1992) Umkomasia franconica n. sp. und Pteruchus septentrionalis n. sp., Fruktifikationen von Thinnfeldia Ettingshausen. Paläontogr B 224:63–73

    Google Scholar 

  • Reymanowna M (1970) New investigations of the anatomy of Caytonia using sectioning and maceration. Paläontogr B 3:651–655

    Google Scholar 

  • Friedman WE (2008) Hydatellaceae are water lilies with gymnospermous tendencies. Nature 453:94–97

    Article  Google Scholar 

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Wang, X. (2010). Suggested Angiosperm Ancestors. In: The Dawn Angiosperms. Lecture Notes in Earth Sciences, vol 121. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-01161-0_2

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