Alapaja sp.

Heřmanová, Zuzana, Kvaček, Jiří, Dašková, Jiřina & Halamski, Adam T., 2020, Plant reproductive structures and other mesofossils from Coniacian / Santonian of Lower Silesia, Poland, Palaeontologia Electronica (a 61) 23 (3), pp. 1-23 : 5-7

Alapaja sp.

Figure 3G

Description. Seed is 2.7 mm long, 1.4 mm broad, flattened, ovate, asymmetric, showing fragments of one narrow, inconspicuous wing and one wider wing ( Figure 3G ). Margin shows both large and smaller projections, forming a crest. Larger projections frequently broken off. Micropyle pointed and partly broken in terminal part. Basal part formed by distinctive funicle. Central part of the seed relatively smooth, showing a central depression and a curved structure representing an embryo.

Remarks. Although the seed is not well preserved, we decided to publish it here as unequivocally documenting the presence of the genus at Rakowice Małe. Our seed is more similar to the type material of ( Dorofeev, 1979) from the Cenomanian–Turonian of Alapayevsk (Yekaterinburg, east Ural). Our seed is smaller than Alapaja uralensis from the Turonian of Kazakhstan ( Frumina et al., 1995)

Range. Late Coniacian to early Santonian age.

Occurrence. Żeliszów locality.

Material studied. K 2962; the material is housed in the National Museum Prague.

Figures

FIGURE 3. Conifers (A) Cunninghamites cf. squamosus terminal fragment of twig, no. K2948, scale bar 1 mm (B) Cunninghamites cf. squamosus isolated leaf with leaf cushion, no. K2956, scale bar 1 mm (C) Cunninghamites cf. squamosus adaxial cuticle showing two bands of stomata, no. K2956, scale bar 100 µm (D) Geinitzia formosa, fragment of twig, no. K2958a scale bar 1 mm (E) Geinitzia formosa, isolated leaf with keel, no. K2958b scale bar 1 mm (F) Geinitzia formosa, detail of abaxial cuticle showing two irregular stomatal bands, no. K2958b scale bar 100 µm (G) Alapaja sp. seed, no. K2962 scale bar 1 mm (H) Seletya sp. seed no. K 3012 scale bar 1 mm (I) Seletya sp. seed no. K 3013, scale bar 1 mm. All specimens from Żeliszów locality.