Peltaspermaceae

Peltaspermaceae; Temporal range: Middle Permian–Late Triassic PreЄ Є O S D C P T J K Pg N
	Lepidopteris madagascariensis leaf from Early Triassic Newport Formation, near Sydney, Australia.
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Division:	†Pteridospermatophyta
Order:	†Peltaspermales
Family:	†Peltaspermaceae; Thomas 1933
Genera
	Peltaspermum ovulate structures; Antevsia pollen organs; Lepidopteris leaves;

Peltaspermaceae is a natural family of seed ferns (Pteridospermatophyta) widespread in both northern and southern hemispheres coal measures of Permian and Triassic age.[1]

Description

Peltaspermaceae have umbrella-like (peltate) cupules with numerous pendant ovules born in complex large branching structures (Peltaspermum). The pollen organ (Antevsia) has radiating cigar-shaped pollen sacs attached to small blades, again in complex branching structures. The leaves (Lepidopteris) are bipinnate to tripinnate with small pinnules on the rachis.

References

Thomas, H.H. (1933). "On some pteridospermous plants from the Mesozoic rocks of South Africa". Philosophical Transactions of the Royal Society B. 222 (483–493): 193–265. doi:10.1098/rstb.1932.0016.

External links

"Fossilworks: Lepidopteris". paleodb.org. Retrieved 2016-03-18.

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[1] Thomas, H.H. (1933). "On some pteridospermous plants from the Mesozoic rocks of South Africa". Philosophical Transactions of the Royal Society B. 222 (483–493): 193–265. doi:10.1098/rstb.1932.0016.