Publication
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On the Barremian-Early Albian biogeography (by ammonites) of Colombia Article
Scripta Geologica, 515-558.January 2004
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Intervascular pit membranes with a torus in the wood of Ulmus (Ulmaceae) and related genera Article
New Phytologist, 51-59.January 2004
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Addition of three species of the genus Plesionika (Crustacea: Caridea: Pandalidae) to the known Atlantic marine fauna of Colombia Article
Zoologische Mededelingen, 131-146.January 2004
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New Indo-Australian subgenera and species of the genera Xynobius Foerster and Ademoneuron Fischer (Hymenoptera: Braconidae: Opiinae) Article
Zoologische Mededelingen, 313-329.January 2004
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Aptian and Early Albian Douvilleiceratidae, Acanthohoplitidae and Parahoplitidae of Colombia Article
Scripta Geologica, 313-514.January 2004
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Barremian-Early Albian Deshayesitidae, Oppeliidae, Desmoceratidae and Silesitidae of Colombia Article
Scripta Geologica, 183-312.January 2004
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Short notes and reviews Amphibians of France, Belgium and Luxemburg Article
Contributions to Zoology, 73(4), 323-324.January 2004
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Heteromorphic ammonites from the Barremian and Aptian strata of Colombia Article
Scripta GeologicaJanuary 2004