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:B2B26A3D-C011-0DC7-B8DE-D30C9A5AA8F1 species
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Xitunia spinitheca

Xitunia spinitheca J.-Z. Xue Acta Geol. Sin. (Engl. ed.), 83(3): 505. 10 Jun 2009
Name
Xitunia spinitheca
Rank
Species
Generic Name
[Genus] Xitunia
Authors (Pub.)
Xue J.-Z.  
Publication
Two zosterophyll plants from the Lower Devonian (Lochkovian) Xitun Formation of Northeastern Yunnan, China [2009/6]
Journal
Acta Geologica Sinica
Volume
83
Issue
3
Page number
505
Year
2009
Fossil Status
stems (with sporangia)
Stratigraphy
Lochkovian
Location
Quarry at Huaguo Hill of Shengfeng district of Qujing city, Yunnan Province, China
Paleoregion
China (South)
Data for Holotypus
Repository
Beijing University, Department of Geology, Beijing, China
Repository Number
PKU-XH200a
Diagnosis
Fertile regions, at least 21 mm long and 9.6-11.2 mm wide. Adaxial valve of sporangia, 2.6-3.0 mm wide and 2.9-3.3 mm high; abaxial valve, 5.0-5.2 mm high and 4.1-4.8 mm wide at the distal portion (exclusive of distal sterile appendages). Appendages, spiny-shaped in face view, flattened, 1.7-5.3 mm long, with a base being 0.55-1.31 mm wide, decreasing in width to the pointed end, unforked or dichotomous once to twice. Each sporangium attached by a stalk at an acute angle to the axis. Stalks, 2.2-2.6 mm long and 0.8-1.0 mm wide.
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