Ally the accepting alligator teaches her friends about the importance of accepting others. It is written in rhyme and sure to help demonstrate to the young child in your life the message of acceptance.

Biology and Evolution of Crocodylians is a comprehensive review of current knowledge about the world's largest and most famous living reptiles. Gordon Grigg's authoritative and accessible text and David Kirshner's stunning interpretive artwork and colour photographs combine expertly in this contemporary celebration of crocodiles, alligators, caimans and gharials. This book showcases the skills and capabilities that allow crocodylians to live how and where they do. It covers the biology and ecology of the extant species, conservation issues, crocodylian–human interaction and the evolutionary history of the group, and includes a vast amount of new information; 25 per cent of 1100 cited publications have appeared since 2007. Richly illustrated with more than 500 colour photographs and black and white illustrations, this book will be a benchmark reference work for crocodylian biologists, herpetologists and vertebrate biologists for years to come.

Concise detailed review — amply illustrated — of the astonishing creatures that ruled the earth for some 180 million years, with particular emphasis on the tetrapods (four-legged vertebrates that lived during the years of reptilian dominance). Also examines interrelationships between amphibians and reptiles, birds and mammals, and between these creatures and their environments.

Pere Alberch (1954-1998) fue un destacado biólogo español que reformuló el concepto de evo-devo, la ciencia del desarrollo y la evolución, siguiendo la estela dejada por figuras clásicas de la ciencia de los siglos XIX y XX tales como Étienne Geoffroy Saint-Hilaire, sir Gavin De Beer, Conrad H. Waddington y Stephen J. Gould. Sus artículos sobre las limitaciones desarrollistas y evolucionistas, centrados en la heterocronía como proceso fundamental responsable de la formación de la filogenia, constituyen verdaderos clásicos de la evo-devo actual. Este volumen presenta tres ensayos originales que analizan la importancia histórica y filosófica de su trabajo en el desarrollo de la evo-devo. Además ofrece una selección de reproducciones facsímiles de sus artículos más relevantes, que proporcionan al lector una visión inestimable para encomiar la vida y el trabajo de Alberch.