1. Abbott, G. D., Ewbank, G., Edwards, D., & Wang, G.-Y. (1998). Molecular characterization of some enigmatic Lower Devonian fossils. Geochimica et Cosmochimica Acta, 62, 1407–1418.
2. Abbott, G. D., Swain, E. Y., Muhammad, A. B., Allton, K., Belyea, L. R., Laing, C. G., & Cowie, G. L. (2013). Effect of water-table fluctuations on the degradation of Sphagnum phenols in surficial peats. Geochimica et Cosmochimica Acta, 106, 177–191.
3. Baas, M., Briggs, D. E. G., van Heemst, J. D. H., Kear, A. J., & de Leeuw, J. W. (1995). Selective preservation of chitin during the decay of shrimp. Geochimica et Cosmochimica Acta, 59, 945–951.
4. Bartram, K. M., Jeram, A. J., & Selden, P. A. (1987). Arthropod cuticles in coal. Journal of the Geological Society, 144, 513–517.
5. Collinson, M. E., van Bergen, P. F., Scott, A. C., & de Leeuw, J. W. (1994). The oil generating potential of plants from coal and coal-bearing strata through time: A review with new evidence from carboniferous plants. In A. C. Scott & A. J. Fleet (Eds.), Coal and coal-bearing strata as oil-prone source rocks? (Vol. 77, pp. 31–70). London: Geological Society Special Publication.