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Science 19 June 1970:
Vol. 168. no. 3938, pp. 1447 - 1449
DOI: 10.1126/science.168.3938.1447
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Articles

Chlorophyll Derivatives in Middle Eocene Sediments

David L. Dilcher 1, Raphael J. Pavlick 2, and James Mitchell 2

1 Department of Botany, Indiana University, Bloomington 47401
2 Department of Geology, Indiana University

Chloroform extracts of middle Eocene brown coal were made; the chlorophyll derivatives obtained were separated chromatographically. The visible light spectrum, chromatographic behavior, HCl number, infrared spectrum, and mass spectrum of one of the pigments extracted is indicative of methyl pheophorbide a. This is the oldest occurrence of fossil phorbins reported.


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Evidence of Paleozoic Chromosomes from Lycopod Microgametophytes.
S. D. Brack-Hanes, S. D. BRACK-HANES, and J. C. VAUGHN (1978)
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Flavonoid and Other Chemical Constituents of Fossil Miocene Celtis and Ulmus (Succor Creek Flora).
D. E. Giannasi (1977)
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Flavonoids and Other Chemical Constituents of Fossil Miocene Zelkova (Ulmaceae).
K. J. Niklas, K. J. NIKLAS, and D. E. GIANNASI (1977)
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