Pteruchus

Pteruchus
Temporal range: Triassic
Pteruchus africanus fossil pollen organ, Late Triassic, Molteno Formation, Umkomaas, South Africa.
Scientific classification
Kingdom: Plantae
Division: Pteridospermatophyta
Order: Peltaspermales
Family: Corystospermaceae
Genus: Pteruchus
Thomas (1933)[1]

Pteruchus is a form genus for pollen organs of the seed fern (Pteridospermatophyta family Umkomasiaceae. It was first described by Hamshaw Thomas[1] from the Umkomaas locality of South Africa.

Umkomasia macleani reconstruction of whole plant including leaves (Dicroidium odontopteroides, pollen organs (Pteruchus africanus based largely on material from the Umkomaas locality of South Africa[2]

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.

Whole plant reconstructions

References

  1. 1 2 3 Thomas, H.H. (1933). "On some pteridospermous plants from the Mesozoic rocks of South Africa". Philosophical Transactions of the Royal Society Series B. 222: 193–265. doi:10.1098/rstb.1932.0016.
  2. Retallack, G.J. & Dilcher, D.L (1988). "Reconstructions of selected seed ferns.". Annals of the Missouri Botanical Garden. 75: 1010–1057. doi:10.2307/2399379.
  3. Retallack,G.J. (1977). "Reconstructing Triassic vegetation of Australasia: a new approach for the biostratigraphy of Gondwanaland". Alcheringa. 1: 247–278. doi:10.1080/03115517708527763.


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