A Segmental Morphological Paradigm for Understanding Vertebrate Forebrains (Part 1 of 2)

The idea is presented that modern segmental thinking on the forebrain is best conceived of as a scientific paradigm, which is revealing itself to be increasingly advantageous for the interpretation of both causal developmental/genetic data and pitfall-free morphology. Various related or opposed viewpoints are considered briefly, emphasizing their respective assumptions with regard to longitudinal and transverse subdivisions.