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Specimen: Detailed specimen of rarer Neuropterid seed fern Neuropteris rarinervis BUNBURY
Stratigraphy: Upper Carboniferous, Namurian B
Age: ca. 320 Mya
Matrix dimensions: 8,0 x 7,0 x 1,0 cm ( white square on pictures is 1,0 x 1,0 cm )
Description:
Detailed specimen of rarer Neuropterid seed fern Neuropteris rarinervis BUNBURY
All had fernlike foliage; however, they reproduced by seeds, with ovules and pollen organs attached to the fronds. Gamete - producing structures in the seeds were surrounded by a hard inner integument and a fleshy outer layer. These features have led some authorities to speculate that these seeds may have been dispersed by animals. Some seeds were large. ( Pachytesta gigantea, a seed of Medullosa, grew up to 7 cm long.) Pollen organs of seed ferns were also large and complex and were commonly made up of many pollen sacs fused into a large structure.
Systematic:
Ordo: Medullosales
Familia:
Whitleseyinae
Genus: Neuropteris