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more general categories information about this item Biological Sciences Biological Sciences anatomy and morphology (70482) plant anatomy (36017) stems (4498) biochemistry (102540) biochemical compounds (82890) nucleic acids, nucleosides and nucleotides (18273) nucleic acids (16648) DNA (10243) ribosomal DNA (1546) plastid DNA (507) chloroplast DNA (408) botany (53088) plant biology (52661) plant anatomy (36016) stems (4498) evolution (9385) extinction (851) phylogeny (4149) genetics (60992) molecular genetics (44734) nucleic acids (16648) DNA (10243) ribosomal DNA (1546) plastid DNA (507) chloroplast DNA (408) paleontology (250) fossils (191) Calendar Year Calendar Year Year (337475) 2011 (42920) Natural Resources, Earth and Environmental Sciences Natural Resources, Earth and Environmental Sciences ecology (54081) community ecology (22291) habitats (9806) Physical and Chemical Sciences Physical and Chemical Sciences chemical substances (129118) biochemical compounds (82878) nucleic acids, nucleosides and nucleotides (18273) nucleic acids (16648) DNA (10243) ribosomal DNA (1546) plastid DNA (507) chloroplast DNA (408) Plant Science and Plant Products Plant Science and Plant Products botany (53089) plant biology (52662) plant anatomy (36017) stems (4498) Reference Types Reference Types Journal (337546) Taxa - Plantae Taxa - Plantae Cycadopsida (33) Magnoliophyta (59301) Coniferophyta (4467) Pinopsida (4357) Taxodiaceae (243) Metasequoia (19) Metasequoia glyptostroboides (15) Ginkgoopsida (89) Ginkgoaceae (87) Ginkgo (87) Abstract of Article: Will be presented in next release Date Last Accessed: Accessed January 20, 2015 Title of Article: Cenozoic extinctions account for the low diversity of extant gymnosperms compared with angiosperms Author(s) of Article: Will be identified in next release Citation: The new phytologist 2011 v.192 no.4 pp. 997-1009 Click to View: (Click to View) Date of Publication: 2011 Location of Article: http://pubag.nal.usda.gov/pubag/article.xhtml?id=569353 Name of Publication: The new phytologist Publishing Company: Will be identified in next release Accession Number: 171109