Yegor B. Malashichev is Assistant Professor for Zoology at the Department of Vertebrate Zoology in St. Petersburg State University, Russia, and currently is an Alexander von Humboldt Fellow in the Institute of Anatomy and Cell Biology in Freiburg University, Ger many. M ain research interests include skeleton development and evolution as well as developmental and evolutionary aspects of vertebrate lateralization. A. Wallace Deckel is a Professor at the University of Connecticut Health Center in Farmington, Connecticut, where he works as a senior Neuropsychologist in the Department of Psychiatry. He has published widely in the area of cerebral specialization. This work has included the study of lateralized aggression in the lizard Anolis carolinesis and monoaminergic control of ethanol consumption in the rodent.