Molecular signatures of fossil leaves provide unexpected new evidence for extinct plant relationships

  title={Molecular signatures of fossil leaves provide unexpected new evidence for extinct plant relationships},
  author={Vivi Vajda and Milda Pucetaite and Stephen McLoughlin and Anders Kokkvoll Engdahl and Jimmy Heimdal and Per Uvdal},
  journal={Nature Ecology \& Evolution},
Gene sequences form the primary basis for understanding the relationships among extant plant groups, but genetic data are unavailable from fossils to evaluate the affinities of extinct taxa. Here we show that geothermally resistant fossil cuticles of seed-bearing plants, analysed with Fourier transform infrared (FTIR) spectroscopy and hierarchical cluster analysis (HCA), retain biomolecular suites that consistently distinguish major taxa even after experiencing different diagenetic histories… 
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