The INTERNATIONAL FOSSIL PLANT NAMES INDEX
Global registry of scientific names of fossil organisms covered by the International Code of Nomenclature for Algae, Fungi, and Plants and the International Code of Zoological Nomenclature © 2014-2022

IDNAME urn:idName:ifpni.org:species:EF1AECA6-AE01-4103-A47F-779DA6CC49A1 species
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Denglongia hubeiensis

Denglongia hubeiensis J.-Z. Xue, S.-G. Hao Int. J. Pl. Sci., 169(9): 1315. Dec 2008
Name
Denglongia hubeiensis
Rank
Species
Generic Name
[Genus] Denglongia
Authors (Pub.)
Xue J.-Z. Hao S.-G.  
Publication
Denglongia hubeiensis gen. et sp. nov., a new plant attributed to Cladoxylopsida from the Upper Devonian (Frasnian) of South China [2008/12]
Journal
International Journal of Plant Sciences
Volume
169
Issue
9
Page number
1315
Year
2008
Fossil Status
stems (with sporangia)
Stratigraphy
Frasnian
Strat. comment
Huangjiadeng Formation
Location
South side of Luoyan Hill, 20 km southwest of Changyang County, Hubei Province, China
Paleoregion
Cathaysia (South)
Data for Holotypus
Repository
Beijing University, Department of Geology, Beijing, China
Repository Number
PKU-XH120
Diagnosis
Main axes 3–7 mm wide and at least 340 mm long, with internodes up to 190 mm long. First-order branches 1.5–3.0 mm wide and at least 290 mm long, with internodes 40–60 mm in length. Second-order branches, on average, 1.0 mm wide and at least 30 mm long, arranged in a whorled pattern. Sterile ultimate appendages inserted at right angles on axes, 6–22 mm in overall length. Fertile structures 8–16 mm wide at the widest position and 6.0–6.5 mm high, with a stalk 4.0 mm long and 0.4–0.6 mm wide; stalk divides once to form an initial dichotomy, each resulting branch bearing three or four alternate lateral branches in a pinnate pattern. Each lateral branch dichotomizes more than four times at an angle of ;35–65, with penultimate and ultimate divisions toward inside of fertile structure. Sporangia 1.4–2.0 mm long, 0.3–0.4 mm wide. Spores anisosporous, circular or oval, in two size classes: 22–30 and 40–55 mm in diameter; larger spores with thin, smooth, wrinkled exine and rays of trilete mark weakly developed and extending over one-half of spore radius.
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