Organic Preservation of Biopolymers in Fossil Leaves - Biopolymers: A Molecular Paleontology Approach - page 57

C 16 FA

a

Fossil Castanea vesca specimen 1

Pr1

29

C 14 FA

L1

B2

20

B

B1

C 18 FA

L3

2 6

L4

L 2

16

2 2

b Fossil Pinus

L2

P

L1

L3

L4

C 16 FA

B1

31

B

29

C 14 FA

B2

B3

C 18 FA

Pr1

L5

2 2

c

Fossil Populus alba specimen1

29

Pr1
Pr2

3 1

2 0

B

B2

B1

B4

B3

Retention time

Fig. 3.8 Partial total ion current chromatogram of fossil leaves, shown in Fig. 3.2 . ( a ) C. vesca sp1
( b ) Pinus ( c ) Populus alba sp1 B2 : dimethyl benzene, B3 : trimethyl benzene, B4 : tetramethyl-
benzene. Lignin units: L1 : 2-methoxyphenol, L2 : 4-methyl-2-methoxyphenol, L3 : 4-ethenyl-2-
methoxyphenol, L4 : 3-allyl-6-methoxyphenol, L5 : 2,6 dimethoxy-4-vinyl phenol. Pr1 : Prist-1-ene,
Pr2 : Prist-2-ene, P : Phenol, FA : Fatty acyl moeities, C n denotes carbon chain length. ▬ n -alkane,
n -alk-1-ene homologues, number indicating the carbon chain length