Media type: E-Article Title: Über das phylogenetische Alter von Höhlentieren Untersuchungen über die cavernicole Süßwasserfauna Yucatans Contributor: Wilkens, Von Horst imprint: Hindawi Limited, 2009 Published in: Journal of Zoological Systematics and Evolutionary Research Language: English DOI: 10.1111/j.1439-0469.1973.tb00132.x ISSN: 0947-5745 Keywords: Genetics ; Molecular Biology ; Animal Science and Zoology ; Ecology, Evolution, Behavior and Systematics Origination: Footnote: