Gray, Jane (September 1993). Major Paleozoic land plant evolutionary bio-events. Palaeogeography, Palaeoclimatology, Palaeoecology. 104 (1–4): 153–169. doi:10.1016/0031-0182(93)90127-5. ISSN0031-0182.
Sun, G. (27 ноября 1998). In Search of the First Flower: A Jurassic Angiosperm, Archaefructus, from Northeast China. Science. 282 (5394): 1692–1695. doi:10.1126/science.282.5394.1692. PMID9831557.
Sun, G. (27 ноября 1998). In Search of the First Flower: A Jurassic Angiosperm, Archaefructus, from Northeast China. Science. 282 (5394): 1692–1695. doi:10.1126/science.282.5394.1692. PMID9831557.
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Gray, Jane (September 1993). Major Paleozoic land plant evolutionary bio-events. Palaeogeography, Palaeoclimatology, Palaeoecology. 104 (1–4): 153–169. doi:10.1016/0031-0182(93)90127-5. ISSN0031-0182.