Williamsoniaceae

Williamsoniaceae; Temporal range: Triassic–Cretaceous PreꞒ Ꞓ O S D C P T J K Pg N
	Restoration of Wielandiella
	Diagram of Weltrichia, a male reproductive structure
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Order:	†Bennettitales
Family:	†Williamsoniaceae; (Carruthers) Nathorst, 1913
Genera
	Zamites (leaf, in partim); Anomozamites (leaf); Ischnophyton; Kimuriella (whole plant); Pterophyllum (leaf); Otozamites (leaf); Wielandella (whole plant); Williamsonia (female reproductive structure); Williamsoniella (bisexual reproductive structure); Weltrichia (male reproductive structure); Bucklandia (axes); Bennettistemon (male pollen organ); Vardekloeftia (female seed cone);

Williamsoniaceae is a family within the

seed plants within the Cycadophyta subdivision. Members of this family are believed to have been around two meters tall and with widely serrate leaves along a central stem. Reproductive organs of the Williamsoniaceae have varied widely in the fossil record but almost all have been found to be borne on stalks emerging from a ring of leaves.^[1]

Reproduction

This family is different from

sporangia and others only produce ovule or pollen sacs.^[2]

References

S2CID 38485693
.

^ Paleontologia Paleovertebrados e Paleobotânica Autor : Ismar de Souza Carvalho. Editora Interciência. Archived 2016-03-04 at the Wayback Machine

Taxon identifiers
Williamsoniaceae

Wikidata: Q2581270

Wikispecies: Williamsoniaceae

GBIF: 4891679

IRMNG: 103907

Open Tree of Life: 4001639

Paleobiology Database: 157245

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Retrieved from "https://en.wikipedia.org/w/index.php?title=Williamsoniaceae&oldid=1205427468"

[Meyen_1984-1] S2CID 38485693
.

[paleobotany1-2] Paleontologia Paleovertebrados e Paleobotânica Autor : Ismar de Souza Carvalho. Editora Interciência. Archived 2016-03-04 at the Wayback Machine

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[2]