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Yunia guangnania
Yunia guangnania S.-G. Hao, J.-Z. Xue Early Dev. Posongchong Fl. Yunnan 122. 2013
- Name
- Yunia guangnania
- Rank
- Species
- Generic Name
- [Genus] Yunia
- Authors (Pub.)
- Hao S.-G.
Xue J.-Z.
- Publication
- The Early Devonian Posongchong flora of Yunnan [2013]
- Book
- The Early Devonian Posongchong flora of Yunnan
- Page number
- 122
- Year
- 2013
- Fossil Status
- stems (with sporangia)
- Stratigraphy
- Pragian
- Strat. comment
- Posongchong Formation
- Location
- outcrop near Daliantang Village, about 9 km northeast of Guangnan County, Yunnan Province, China
- Paleoregion
- Cathaysia (South)
Data for Holotypus
- Repository
- Beijing University, Department of Geology, Beijing, China
- Repository Number
- PUH.09-Yun.3
- Diagnosis
- Axes 3.5-4.0 mm wide, isotomously branching at 30°-50°. Successive branches, 3.0-4.2 mm apart. Distal sterile axes, about 1.8-2.2 mm wide at the branching point and tapering distally. Fertile axes, at least 5 cm long and 2.2-2.7 mm wide at base, branched, and tapering distally to about 1.6 mm wide. Sporangia dorsiventrally flattened, elongateelliptical in face view, 5.0-8.3 mm long (average 6.7 mm), 2.2-4.8 mm wide (average 3.0 mm) and about 1 mm thick. Stalks, very short, less than 1 mm long and about 0.3 mm wide. Sporangia, scattered spirally, and borne at various angles along axis. Intervals between sporangia, 1.5-6.0 mm long. Dehiscence line, along a narrow peripheral rim.
