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:species:F66FBEF1-AB74-362B-2930-F660E3E948DE species
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Brunoa santarrosensis

Brunoa santarrosensis Artabe, Zamuner, D.W. Stev. Bot. Rev. (Lancaster), 70(2): 123. 3 Sep 2004
Name
Brunoa santarrosensis
Rank
Species
Generic Name
[Genus] Brunoa
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
123
Year
2004
Fossil Status
stems
Stratigraphy
Upper Cretaceous
Strat. comment
Allen Formation
Location
Bajo de Santa Rosa, Río Negro Province, Argentina
Paleoregion
America (South)
Data for Holotypus
Repository
Museo de La Plata, La Plata, Argentina
Repository Number
LPPB 12968a–k; LPPB-Pm 1545 to 1555
Data for Paratypus
Repository
Museo de La Plata, La Plata, Argentina
Repository Number
LPPB–Pm 1545 to 1555
Diagnosis
Parenchymatous pith with idioblasts, mucilage cavities, and anastomosing medullary bundles, and vascular bundles forming rings related to cone domes. Tracheids of secondary xylem have scalariform or araucaroid, uniseriate to triseriate, bordered pitting. Phloem consisting primarily of fibers with few sieve cells. Cortex parenchymatous with idioblasts and mucilage cavities. Foliar bases with monostratified epidermis and a noncontinuous sclerenchyma band below a thin parenchymatous zone and with collateral vascular bundles without any associated mucilage canals or cavities.
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