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Table 3 Comparison of spores and pollen contents (relative abundance) of Assemblage I from the Permian Taiyuan Formation in Shandong Province, North China

From: Early-Middle Permian palynoflora of Shandong Province, eastern North China

Location (see Fig. 1b for reference)

Spores and pollen assemblage

Relative abundance of Azonotriletes

(%)

Relative abundance of Zonotriletes

(%)

Relative abundance of Monoletes

(%)

Relative abundance of Gymnosperm pollen

(%)

Northern Shandong Province

Kaipingispora–Densosporites–Crassispora

87.1

8.5

7.0–24.6

9.0

Feicheng coalfield, Shandong Province

Thymospra thiessenii–Densosporites

35.8–60.9

10.0

20.0

5.0

Xinwen coalfield, Shandong Province

Laevigatosporites–Thymospora

62.6

8.6

23.0

6.2

Jining coalfield, Shandong Province

Thymospora pseudothiessenii–thiessenii

25.7

11.6

55.2

7.2

Boreholes XB15 and DB2 (This study)

Laevigatosporites–Granulatisporites

73.2

3.6

21.2

2.0

  1. Note: Data of the northern Shandong Province, Feicheng, Xinwen, and Jining coalfields are from Li et al. (2013)