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:1CE07033-1D5C-4405-9D52-2937314A0C70 species
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Zosterophyllum tenerum

Zosterophyllum tenerum S.-G. Hao, J.-Z. Xue Early Dev. Posongchong Fl. Yunnan 98. 2013
Name
Zosterophyllum tenerum
Rank
Species
Generic Name
[Genus] Zosterophyllum
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
98
Year
2013
Fossil Status
stems (with sporangia)
Stratigraphy
Pragian
Strat. comment
Posongchong Formation
Location
Mountain outcrop approximately 200 m west of Zhichang village, Wenshan District, Yunnan Province, China
Paleoregion
Cathaysia (South)
Data for Holotypus
Repository
Beijing University, Department of Geology, Beijing, China
Repository Number
PUH.09-Z.ten.1
Diagnosis
Naked axes with isotomous branches, 0.4-2.1 mm wide. Branching angles of main axes, 20°-40°. Sterile axes slender, branching at least 2-3 times, with narrow hemi-circinate tips. Fertile axes, at least 12.9 cm long, more distal regions about 0.4-0.8 mm wide. Sporangia borne laterally on short straight stalks, inserted at narrow angles of 10°-25°, scattered along axes and over branching points, sometimes sparsely, with intervals between sporangia from 2.3-10.4 mm. Sporangia pear-shaped in face view (sporangial body ovoid to subcircular) attached by a wide junction on upright straight stalks. Sporangia flattened, usually 1.9-3.1 mm high and 1.2-2.9 wide. Sporangial stalks 1.4-2.4 mm long, about 0.3 mm wide at the base where they depart from the axis, widening distally at the junction with sporangium to 0.8-1.1 mm. Dehiscence along sporangial convex margin, dividing sporangia into two equal valves. Rim of sporangium about 0.1 mm wide. Anatomy and in situ spores unknown.

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