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Fig. 2 | BMC Evolutionary Biology

Fig. 2

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

Fig. 2

Longitudinally preserved cones of Araripestrobus resinosus gen. nov et sp. nov. from the Crato Formation. a Paratype 1 (SM.B 16495), almost complete cone in lateral outer-surface-view, showing sigmoidal-shaped gaps between groups of layered microsporophylls in the lower part of the cone (arrowheads). be Paratype 2 (MB.Pb.1997/1350). b A median-apical cone part with seven cone portions with a gap between them (white arrowheads), and a rounded dome-shaped apex with a bleb of amber towards the right side of the specimen apex (black arrowhead). c Median cone part displaying individual cone portions with two to four horizontal rows of microsporophylls and a gap between these portions. d Polygonal-hexagonal outline of cross-sections of microsporophylls. e Upper cone part showing microsporophylls with exposed resin canals. f A rubber cast (MB.PB.2020/0020) of a basal-median part of a cone including a peduncle, arrowheads indicate gaps developing between microsporophyll layers

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