La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	A new lycopsid megaspore cone from the Upper Devonian of Chaohu, China
Auteurs :	Yi Wang, Auteur
Type de document :	Article
Dans :	Botanical Journal of the Linnean Society (136(4) 2001-08-01)
Article en page(s) :	439-448
Résumé :	A new small lycopsid cone, Minostrobus chaohuensis gen. et sp. nov., is described from the upper part of Wutung Formation (Famennian) of Chaohu, Anhui, China. Six sporophylls in each whorl are tightly arranged on the cone axis. Each sporophyll consists of a short pedicel and a narrow lamina with smooth margins. One spherical to spherical-ellipsoidal sporangium is attached directly to the adaxial surface of each sporophyll. Each sporangium contains four megaspores. A solid exarch protostele occurs at the centre of the cone axis, and a mesarch protostele in the base of the sporophyll. M. chaohuensis is interpreted as a small, herbaceous, heterosporous lycopsid.
En ligne :	https://doi.org/10.1111/j.1095-8339.2001.tb00584.x

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