Short Communication

Naturwissenschaften

, Volume 94, Issue 3, pp 228-236

First online:

Biomolecules preserved in ca. 168 million year old fossil conifer wood

  • Leszek MarynowskiAffiliated withFaculty of Earth Sciences, University of Silesia Email author 
  • , Angelika OttoAffiliated withForschungsinstitut Senckenberg, Sektion Paläobotanik
  • , Michał ZatońAffiliated withFaculty of Earth Sciences, University of Silesia
  • , Marc PhilippeAffiliated withUniversité Claude Bernard Lyon 1 and UMR 5125 du CNRS
  • , Bernd R. T. SimoneitAffiliated withCollege of Oceanic and Atmospheric Sciences, Oregon State University

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Abstract

Biomarkers are widely known to occur in the fossil record, but the unaltered biomolecules are rarely reported from sediments older than Paleogene. Polar terpenoids, the natural products most resistant to degradation processes, were reported mainly from the Tertiary conifers, and the oldest known are Cretaceous in age. In this paper, we report the occurrence of relatively high concentrations of ferruginol derivatives and other polar diterpenoids, as well as their diagenetic products, in a conifer wood Protopodocarpoxylon from the Middle Jurassic of Poland. Thus, the natural product terpenoids reported in this paper are definitely the oldest polar biomolecules detected in geological samples. The extracted phenolic abietanes like ferruginol and its derivatives (6,7-dehydroferruginol, sugiol, 11,14-dioxopisiferic acid) are produced only by distinct conifer families (Cupressaceae s. l., Podocarpaceae and Araucariaceae), to which Protopodocarpoxylon could belong based on anatomical characteristics. Therefore, the natural product terpenoids are of great advantage in systematics of fossil plant remains older than Paleogene and lacking suitable anatomical preservation.

Keywords

Biomolecules Fossil conifer wood Middle Jurassic