Freshwater Mollusks of the World : Johns Hopkins University Press : 9781421427317 : 02 Apr 2019 : The definitive resource on the biology and evolution of freshwater mollusks. There are more species of freshwater mollusks-well over 5,000-than all the mammal species of the world. Freshwater mollusks are also arguably the most endangered fauna on the planet. Yet few references exist for researchers, shell enthusiasts, and general readers who are interested in learning more about these fascinating creatures. In Freshwater Mollusks of the World, Charles Lydeard and Kevin S. Cummings fill that void with contributions from dozens of renowned mollusk experts. Touching on 34 families of freshwater gastropods (snails) and 9 families of freshwater bivalves (mussels and clams), each chapter provides a synthesis of the latest research on the diversity and evolutionary relationships of the family. The book also includes ? a look at how evolving DNA sequencing data techniques help shed light on mo