Classification of methanogenic bacteria by 16S ribosomal RNA characterization by George E. Fox and others 2026-11-05
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Verified locator: PNAS 74(10), 4537–4541 (October 1977). Primary Abstract pmc.ncbi.nlm.nih.gov/articles/PMC431980/ ; publisher indexed page 4537 pnas.org/doi/full/10.1073/pnas.74.10.4537 verifies full bylines and S_AB=2N_AB/(N_A+N_B), nucleotide-residue weighting for fragments at least six nucleotides.
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Phylogenetic structure of the prokaryotic domain: the primary kingdoms by Carl R. Woese and George E. Fox 2026-11-05
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PNAS74(11),5088–5090(1977). Primary record pmc.ncbi.nlm.nih.gov/articles/PMC432104/ ; author full names directly verified from original-paper byline in university-hosted scan bip.weizmann.ac.il/education/course/evogen/Phylogenetics/woese.pdf . Abstract: phylogenetic distinction based on ribosomal-RNA sequence characterization. Do not describe the1977 experiment as a modern PCR amplicon survey.
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