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Aneurophyton doui
Aneurophyton doui Q. Jiang, Y. Wang, H.-H. Xu, J. Feng Int. J. Pl. Sci., 174(8): 1185. 4 Sep 2013
- Name
- Aneurophyton doui
- Rank
- Species
- Generic Name
- [Genus] Aneurophyton
- Authors (Pub.)
- Jiang Q.
Wang Y.
Xu H.-H.
Feng J.
- Publication
- A new species of Aneurophyton (Progymnospermopsida) from the Middle Devonian of West Junggar, Xinjiang, China, and its paleophytogeographical significance [2013/9]
- Journal
- International Journal of Plant Sciences
- Volume
- 174
- Issue
- 8
- Page number
- 1185
- Year
- 2013
- Fossil Status
- stems (with sporangia)
- Stratigraphy
- Givetian
- Strat. comment
- Hujiersite Formation
- Location
- small quarry by National Highway G217, ∼20 km north of the town of Hoxtolgay, Hobuksar Menggol Autonomous County, Xinjiang, China
- Paleoregion
- Kazakhstania (Xinjiang)
Data for Holotypus
- Repository
- Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences, Nanjing, China
- Repository Number
- PB21568
- Diagnosis
- At least four orders of axes and ultimate units (vegetative appendages/fertile organs) are known. Spines, 0.5– 1.5 mm long, occur sparsely on the surface of all orders of axes and ultimate units. First-order axes, up to 6 mm wide and at least 90 mm long, demonstrate only a slight distal taper. Second-order axes, up to 4 mm wide, diverge helically from the first-order axis in closely inserted pairs. From the second order, axes of subsequent orders are produced by bifurcation; third-order axes are 2.0–2.5 mm wide, and fourth-order axes are 1.5–2.0 mm wide. Vegetative appendages, 7.0–13.0 mm long as a whole, diverge from the third- or fourth-order axes in helical pairs, as a one to three times dichotomizing system of three-dimensionally-extended flattened branchlets. Fertile organs, 3.7–8.0 mm long as a whole and borne on the thirdor fourth-order axes, are up to three times opposite/subopposite pinnate systems. All three orders of fertile organ axes, in most cases recurved and rarely straight, bear sporangia or organ axes. Sporangia, oppositely, suboppositely, or alternately, are inserted distichously to the usually adaxial side of the fertile organ axes; they are short-stalked, elliptical, 0.8– 1.3 mm wide, and 2.2–3.5 mm long, and they sometimes have longitudinal dehiscence or a twisting configuration.
