[1] Lambert J B, Tsai Y H, Shah M C, et al. Archaeometry, 2012, 54(2): 332.
[2] Bray P S, Anderson K B. Science, 2009, 326(5949): 132.
[3] Poulin J, Helwig K. Analytical Chemistry, 2014, 86(15): 7428.
[7] Anderson K B, Winans R E, Botto R E. Organic Geochemistry, 1992, 18(6): 829.
[8] Lambert J B, Santiagoblay J A, Anderson K B. Angewandte Chemie, 2008, 47(50): 9608.
[10] Shi G H, Grimaldi D A, Harlow G E, et al. Cretaceous Research, 2012, 37(37): 155.
[12] Brody R H, Edwards H G M, Pollard A M. Spectrochimica Acta. Part A: Molecular and Biomolecular Spectroscopy, 2001, 57(6): 1325.
[13] Edwards H G M, Farwell D W, Villar S E J. Spectrochimica Acta. Part A: Molecular and Biomolecular Spectroscopy, 2007, 68(4): 1089.
[14] Winkler W, Kirchner E C, Asenbaum A, Musso M. Journal of Raman Spectroscopy, 2001, 32(1): 59.
[15] Lambert J B, Levy A J, Santiago-Blay J A, et al. Life, 2013, 1(3): 136.
[16] Lambert J B, Poinar G O. Accounts of Chemical Research, 2002, 35(8): 628.
[17] Weitschat W, Wichard W. Review of Palaeobotany and Palynology, 2002, 123(3): 347.
[18] Bosselaers J, Dierick M, Cnudde V, et al. Zootaxa, 2010, 2427: 25.