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Molecular Preservation in Graptolites
2013Graptolites are important fossils in the Lower Palaeozoic. 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.
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Thermal Behavior of Estonian Graptolite–Argillite from Different Deposits
Processes, 2022Andres Trikkel +2 more
exaly
Organic petrography of graptolite fragments from Turkey
Marine and Petroleum Geology, 1984Fariborz Goodarzi
exaly