Pteruchus Pteruchus is a form genus for pollen organs of the seed fern (Pteridospermatophyta family Umkomasiaceae . It was first described by Hamshaw Thomas from the Umkomaas locality of South Africa ., pollen organs ( Pteruchus africanus'' based largely on material from the Umkomaas locality of South Africa Description The pollen organ Pteruchus differs from other seed fern pollen organs in having numerous pendant pollen sacs from a blade-like head, in an arrangement similar to an epaulette .Pteruchus africanus may have been produced by the same plant as Umkomasia macleanii and Dicroidium odontopteroidessimilarities between these leaves and reproductive structures at the Umkomaas locality of South Africa.Pteruchus barrealensis may have been produced by the same plant as Umkomasia feistmantelii and Dicroidium zuberi , based on cuticular similarities between these leaves and reproductive structures near Sydney Australia .
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