Back
Sigillaria wudensis
Sigillaria wudensis D'Antonio, C.K. Boyce, Jun Wang bis Rev. Palaeobot. Palynol., 2020, (10.1016/j. revpalbo.2020.104203): 5. 3 Mar 2020
- Name
- Sigillaria wudensis
- Rank
- Species
- Generic Name
- [Genus] Sigillaria
- Authors (Pub.)
- D'Antonio M. P.
Boyce C. K.
Wang J.
- Publication
- Two new species of Sigillaria Brongniart from the Wuda Tuff (Asselian: Inner Mongolia, China) and their implications for lepidodendrid life history reconstruction [2020/3]
- Journal
- Review of Palaeobotany and Palynology
- Annee/Jahrgang
- 2020
- Issue
- 10.1016/j. revpalbo.2020.104203
- Page number
- 5
- Year
- 2020
- Fossil Status
- stems
- Stratigraphy
- Asselian
- Strat. comment
- Taiyuan Formation
- Location
- Wuda Coal District (N39°28′53′′, E106°38′08′′) near Wuda, Inner Mongolia, China
- Paleoregion
- Cathaysia (North)
Data for Holotypus
- Repository
- Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences, Nanjing, China
- Repository Number
- PB22958
Data for Paratypus
- Repository
- Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences, Nanjing, China
- Repository Number
- PB22959
- Diagnosis
- Slender tree. Stem 3–6 cm diameter. Leaf bases present as cushions, rhomboidal, approximately 9 mm high, 15 mm wide, radially planar, with linear margins, angular lateral angles, curved upper and lower angles. Lateral line separates lower and upper cushion fields, spanning from lateral
angle of leaf scar into lateral angle of cushion. Cushions may slightly imbricate their upper neighbor. Orthostichies and low angle parastichies
present. Longitudinal ribs absent from stem surface. Leaf scar hexagonal,
approximately 6.5 mm high, 10 mm wide, upper lateral margins convex,
lower lateral margins concave, upper central margin horizontal to weakly dimpled, lower central margin rounded. Leaf scar located centrally and sunken shallowly into cushion. Leaf trace presents as horizontal line, approximately 1.0 mm wide and 0.2 mm high, located 4.5 mm above base of leaf scar. Foliar parichnos scars circular, raised, approximately 0.5 mm diameter, 2 mm apart, at same level as leaf trace. Ligule scar a circular dimple, indented, approximately 1 mm diameter, located 1.2 mm above top of leaf scar. Leaves linear, 5 mm wide at base, tapering gradually to 3 mm wide, median longitudinal ridge present. Reproductive material and rooting structure unknown.
