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 © 2014-2025

IDNAME urn:idName:ifpni.org:species:D6C6C38A-7067-ED8B-C449-E6975815BC93 species
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Lonchopteris elegans

Lonchopteris elegans Tenchov Geol. Balcan., 34(1–2): 101. Jun 2004
Name
Lonchopteris elegans
Rank
Species
Generic Name
[Genus] Lonchopteris
Authors (Pub.)
Tenchov Y. G.  
Publication
The genus Lonchopteris Brongniart in the Dobrudzha Carboniferous Basin, Bulgaria [2004/6]
Journal
Geologica Balcanica
Volume
34
Issue
1–2
Page number
101
Year
2004
Fossil Status
foliage
Stratigraphy
Bashkirian
Strat. comment
Westphalian A
Location
Borehole R 110, Dobrudzha Coalfield, at a depth of 1771 m, Bulgaria
Paleoregion
Laurussia (Moesia)
Data for Holotypus
Repository Number
Specimen No 11239
Diagnosis
Rachis of last order is about 1 mm wide, longitudinally striated. The pinnules are slightly forwards-inclined, nearly oppositely attached. They are linear, parallel-sided for up to 2/3 their length, and then gradually converge to an obtuse or slight acute apex. The base is slightly decurrent in the distal pinnules only. The sinus is oval and naJTow, so that adjacent pinnules arealmost touching. Well-developed pinnules are 915 mm long and 3-4.5 mm wide. The terminal pinnule is oblongate, triangular and narrow. The midvein is clear, straight, and ends near the pinnule apex. It is slightly decurrent in its proximal part. Laterals veins branch at a sharp angle, strongly bend and meet the pinnule border at between about 45° and nearly 80°, depending on the maturity of pinnules. Laterals veins divide two to four times, and anastomose along their entire length forming elongated hexagonal or rhomboidal meshes. From midrib to pinnule border, there are two to four rows of vein-meshes. The first anadromic vein-branch is not anastomosing. Additional veining is presented on the basiscopic side; on the acroscopic side such exist near the end. The first vein-meshes are more or less parallel to the midrib and slightly longer than the meshes in the next row. In the next row, the veinmeshes are not significantly smaller.

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