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Fig. 6 | BMC Evolutionary Biology

Fig. 6

From: Revealing the diversity of amber source plants from the Early Cretaceous Crato Formation, Brazil

Fig. 6

Araripestrobus resinosus gen. nov et sp. nov in situ pollen. ad Scanning electron micrographs, ef light micrographs. ab Pollen grains embedded in the cone tissue, arrowheads indicate areas of preserved amber. c Pollen grains in different orientations showing typical main sulcus with rounded ends (white arrowheads) and lateral pseudosulci with sharp ends (black arrowheads). d Amber-embedded pollen grain showing a lateral sulcus and the finely scabrate, punctate ornamentation; ef Pollen grains adhered to microsporangial surface showing the sulci with rounded ends (arrowhead)

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