protostomes

many protostomes, like worms, exhibit bilateral symmetry.

the development of a coelom is a key characteristic of protostomes.

protostomes represent a diverse group of invertebrates.

during gastrulation, the blastopore of protostomes becomes the mouth.

lophotrochozoa and ecdysozoa are two major groups of protostomes.

the evolutionary history of protostomes is complex and fascinating.

protostome development often involves spiral cleavage.

mollusks and annelids are well-known examples of protostomes.

researchers study protostomes to understand early animal evolution.

the presence of a true coelom distinguishes protostomes from pseudocoelomates.

arthropods, another large group, are also classified as protostomes.