The fundamental structures underlying learning and memory in the brains of invertebrates as different as a fruit fly and an earthworm are remarkably similar, according to neuroscientists. It turns out ...

A brief history and some fundamentals / Craig M. Young -- Phylum Porifera / Manuel Maldonado and Patricia R. Bergquist -- Phylum Cnidaria / Vicki J. Martin and Ron Koss -- Phylum Ctenophora / Mark Q.

Classification, systematics, and phylogeny -- Animal architecture and the bauplan concept -- Animal development, life histories, and origins -- The protists -- Phylum Porifera : the sponges -- Four ...

At the end of the semester in the advanced invertebrate zoology course I took, my rather dry, boring professor made the only joke I remember him ever uttering. We had just finished the phylum ...