Molecular taphonomy of graptolites

NS Gupta, DEG Briggs, RD Pancost

Research output: Contribution to journalArticle (Academic Journal)peer-review

32 Citations (Scopus)

Abstract

Graptolites are important fossils in Early Palaeozoic assemblages. Preserved graptolite periderm consists dominantly of an aliphatic polymer, immune to base hydrolysis. It contains no protein even though its structure, and chemical analyses of the periderm of the living relative Rhabdopleura, indicate that it was originally collagen. This anomaly was previously interpreted as the result of replacement by macromolecular material from the surrounding sediment. New analyses suggest that the aliphatic composition of graptolite periderm reflects direct incorporation of lipids from the organism itself by in situ polymerization. A similar process may account for the preservation of most organic fossils.
Translated title of the contributionMolecular taphonomy of graptolites
Original languageEnglish
Pages (from-to)897 - 900
Number of pages4
JournalJournal of the Geological Society
Volume163 (6)
DOIs
Publication statusPublished - Nov 2006

Bibliographical note

Publisher: Geological Soc. Publ. House

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