Chaloneriaceae

Superregnum: Eukaryota
Regnum: Plantae
Divisio: Tracheophyta
Divisio: Lycopodiophyta
Classis: Lycopodiopsida
Subclassis: Isoetidae
Ordo: Isoetales

Familia: †Chaloneriaceae
Genera: †Bodeodendron – †Chaloneria – †Polysporia – †Sporangiostrobus
Name

Chaloneriaceae Pigg & G.W.Rothwell, Bot. Gaz. 144: 295–302. 1983.
References
Primary references

Pigg, K. B. & Rothwell, G.W. 1983. Megagametophyte development in the Chaloneriaceae fam. nov., permineralised Paleozoic Isoetales (Lycopsida). Botanical Gazette 144: 295–302. Reference page.

Additional references

Doweld, A.B. 2001. Prosyllabus Tracheophytorum. Tentamen systematis plantarum vascularium (Tracheophyta) [Prosyllabus Tracheophytorum. Опыт системы сосудистых растений]. LXXX + 110 pp. Moscow: Geos. ISBN 5-89118-283-1. Фундаментальная электронная библиотека «Флора и фауна» DJVU Google Books Open access Reference page.

Chaloneriaceae is an extinct family of heterosporous lycophyte in the order Isoetales. They are significant in that they feature lobed rooting bases despite dating to the Pennsylvanian, suggesting that lycophytes with similar rooting systems developed contemporaneously with arborescent lepidodendrids which have stigmarian rooting systems rather than deriving from them as had previously been thought. [1]
References

Pigg, Kathleen B.; Rothwell, Gar W. (1983). "Megagametophyte Development in the Chaloneriaceae Fam. Nov., Permineralized Paleozoic Isoetales (Lycopsida)". Botanical Gazette. 144 (2): 295–302. ISSN 0006-8071.