Cytology
发表于 2025-3-28 18:33:32
Molecular Preservation of Eurypterids,, living relatives of the eurypterids, showed that C. and C. fatty acyl moieties likewise dominate. Assuming that the original composition of the eurypterid cuticle was similar to that in living chelicerates, fossilization likely involved the incorporation of such lipids into an aliphatic polymer.
Substitution
发表于 2025-3-28 21:49:39
Molecular Decay of Plant Biopolymers,y decayed . leaves revealed that guaiacyl lignin units and cellulose were degraded more relative to vinyl phenol (the last being the primary pyrolysis product of cutin and plant cuticles) suggesting that cutin is likely more stable than lignin and cellulose during early diagenesis contrary to some p
连接
发表于 2025-3-29 02:56:47
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精确
发表于 2025-3-29 06:54:42
Organic Preservation of Biopolymers in Fossil Leaves,res them to their modern equivalents. Chemical analyses of the fossil leaves revealed the presence of a recalcitrant (non-hydrolysable) geopolymer comprised of benzene derivatives, lignin-derived components, pristenes and an aliphatic component; the latter consists partly of fatty acyl subunits rang
ANN
发表于 2025-3-29 07:26:38
Migration of Organic Molecules from Sediment to Fossils,ces of chitin. These weevil cuticles show excellent morphological and ultrastructural preservation. Plant cuticle is also preserved but it is obscured or distorted by diatom impressions. Molecular analysis of dicotyledonous angiosperm leaf from the Enspel deposit revealed the presence of polysacchar
dry-eye
发表于 2025-3-29 13:46:54
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