期刊
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
卷 109, 期 26, 页码 10218-10223出版社
NATL ACAD SCIENCES
DOI: 10.1073/pnas.1118448109
关键词
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资金
- NSF [0923097, DMR-0654118, EAR-0720062]
- NASA Astrobiology Institute
- Japan Society for the Promotion of Science (JSPS) [20591357, 23591659]
- Curry Fund, Geologists' Association
- Natural Environment Research Council [bgs05001] Funding Source: researchfish
- Direct For Mathematical & Physical Scien
- Division Of Chemistry [0923097] Funding Source: National Science Foundation
- NERC [bgs05001] Funding Source: UKRI
Melanin is a ubiquitous biological pigment found in bacteria, fungi, plants, and animals. It has a diverse range of ecological and biochemical functions, including display, evasion, photoprotection, detoxification, and metal scavenging. To date, evidence of melanin in fossil organisms has relied entirely on indirect morphological and chemical analyses. Here, we apply direct chemical techniques to categorically demonstrate the preservation of eumelanin in two >160 Ma Jurassic cephalopod ink sacs and to confirm its chemical similarity to the ink of the modern cephalopod, Sepia officinalis. Identification and characterization of degradation-resistant melanin may provide insights into its diverse roles in ancient organisms.
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