Tennysonia stellata forms colonies that
Like other bryozoans, T. stellata exhibits zooidal polymorphism, with the feeding zooids arranged in rows.
Many morphological characteristics, such as the presence of kenozooids and gonozooid morphology, are shared with another bryozoan called Heteropora.
However, Heteropora is placed in a different division - suborder Cerioporina. This demonstrates how similar morphologies have developed by convergent evolution in this group of bryozoans.