Fig. 4
From: Early-Middle Permian palynoflora of Shandong Province, eastern North China
Photomicrographs of a selection of spore and pollen fossils identified in samples from boreholes XB15 and DB2 in Shandong Province. a Laevigatosporites maximus; b Laevigatosporites vulgaris; c Laevigatosporites perminutus; d Leiotriletes adnatus; e Leiotriletes sphaerotriangulus; f Leiotriletes sp.; g Lycospora pusilla; h Microreticulatisporites sp.; i Punctatisporites sp.; j Punctatosporites granifer; k Punctatosporites minutus; l Striolatospora sp.; m Spinosporites spinosus; n Thymospora pseudothiessenii; o Verrucosisporites verrucosus. Scale bars (in a-e, g-i and k-o) = 20 μm; Scale bars (in f and j) = 10 μm