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 © 2014-2021

IDNAME urn:idName:fossilplants.info:genus:D391399E-9209-1AC7-C507-E8B861F5DAB8 genus
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Worsdellia

Genus Worsdellia Artabe, Zamuner, D.W. Stev. Bot. Rev. (Lancaster), 70(2): 127. 3 Sep 2004
Name
Worsdellia
Rank
Genus
Authors (Pub.)
Artabe A. E. Zamuner A. B. Stevenson D.  
Publication
Two new petrified cycad stems, Brunoa gen. nov. and Worsdellia gen. nov., from the Cretaceous of Patagonia (Bajo de Santa Rosa, Río Negro Province), Argentina [2004/9]
Journal
Botanical Review
Volume
70
Issue
2
Page number
127
Year
2004
Parent Taxon
[Family] Encephalartaceae
Fossil Status
stems
Type
Worsdellia bonettiae
Diagnosis
Stem arborescent, covered by alternating cycles of cataphylls and persistent rhomboidal foliar bases, polyxylic. Manoxylic vascular cylinder with two concentric rings of collateral vascular bundles and centripetal vascular bundles with respect to the inner ring. Foliar traces run irregularly, and as they pass through wide rays to the outer cortex they curve, producing a girdling configuration. Medullary bundles and mucilage canals occur in the pith.
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