Display Settings:

Format

Send to:

Choose Destination
See comment in PubMed Commons below
Proc Biol Sci. 2009 Oct 7;276(1672):3403-12. doi: 10.1098/rspb.2009.0806. Epub 2009 Jul 1.

A new proposal concerning the botanical origin of Baltic amber.

Author information

  • 1Department of Earth and Atmospheric Sciences, University of Alberta, Edmonton, AB T6G 2E3, Canada. awolfe@ualberta.ca

Abstract

Baltic amber constitutes the largest known deposit of fossil plant resin and the richest repository of fossil insects of any age. Despite a remarkable legacy of archaeological, geochemical and palaeobiological investigation, the botanical origin of this exceptional resource remains controversial. Here, we use taxonomically explicit applications of solid-state Fourier-transform infrared (FTIR) microspectroscopy, coupled with multivariate clustering and palaeobotanical observations, to propose that conifers of the family Sciadopityaceae, closely allied to the sole extant representative, Sciadopitys verticillata, were involved in the genesis of Baltic amber. The fidelity of FTIR-based chemotaxonomic inferences is upheld by modern-fossil comparisons of resins from additional conifer families and genera (Cupressaceae: Metasequoia; Pinaceae: Pinus and Pseudolarix). Our conclusions challenge hypotheses advocating members of either of the families Araucariaceae or Pinaceae as the primary amber-producing trees and correlate favourably with the progressive demise of subtropical forest biomes from northern Europe as palaeotemperatures cooled following the Eocene climate optimum.

PMID:
19570786
[PubMed - indexed for MEDLINE]
PMCID:
PMC2817186
Free PMC Article

Images from this publication.See all images (4)Free text

Figure 1.
Figure 2.
Figure 3.
Figure 4.
PubMed Commons home

PubMed Commons

0 comments
How to join PubMed Commons

    Supplemental Content

    Full text links

    Icon for HighWire Icon for PubMed Central
    Loading ...
    Write to the Help Desk