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Tenuisa frasniana
Tenuisa frasniana De-M. Wang Int. J. Pl. Sci., 168(9): 1342. Dec 2007
- Name
- Tenuisa frasniana
- Rank
- Species
- Generic Name
- [Genus] Tenuisa
- Authors (Pub.)
- Wang D.-M.
- Publication
- Tenuisa frasniana gen. et sp. nov., a plant of euphyllophyte affinity from the Late Devonian of China [2007/12]
- Journal
- International Journal of Plant Sciences
- Volume
- 168
- Issue
- 9
- Page number
- 1342
- Year
- 2007
- Fossil Status
- stems (with sporangia)
- Stratigraphy
- Frasnian
- Strat. comment
- Yunligong Formation
- Location
- Pingshan section, Lianhua Town, Changsha District, Hunan Province, China
- Paleoregion
- Cathaysia (South)
Data for Holotypus
- Repository
- Beijing University, Department of Geology, Beijing, China
- Repository Number
- HNCS-01a; HNCS-01b; HNCS-02
- Diagnosis
- Axes naked. Fertile stem 0.2–1.0 mm wide, with fertile lateral units attached at 45– 90. Distances between adjacent insertions of fertile lateral units 2.1–(6.5)–17.7 mm. Axes of fertile lateral units 0.1–0.5 mm wide. First-order fertile lateral axes 2.1–(4.1)–12.3 mm long and ca. 0.4 mm wide. Second-order axes 1.3–(2.2)–3.8 mm long and ca. 0.3 mm wide. Third-order axes 1.0–(1.5)–2.9 mm long and ca. 0.2 mm wide. Fourth-order axes 0.8–(1.3)–1.6 mm long and ca. 0.1 mm wide. Sporangial number 16–32 per fertile lateral unit. Sporangia generally pendulous, 0.9–(1.3)–1.6 mm long and ca. 0.5 mm wide. Sporangial pedicels 0.3–0.7 mm long and ca. 0.1 mm wide. Sterile ultimate appendages 0.3–0.6 mm wide.
