Our paper on the unique development of a ribbon worm and the evolution of larval forms: https://evodevojournal.biomedcentral.com/articles/10.1186/s13227-015-0023-5 See more about Lineus ruber.
Stumbled upon this fine depiction within past bryozoan literature: Account of an Aurora Borealis (Blackader 1827)
The evolution of segmentation is a controversial topic in biology. Biologists have struggled to answer even the most basic questions. Were our ancestors segmented or not? Has segmentation evolved only once, or has it evolved multiple times independently? What is a segment, after all? The basis of such confusion is partly biological. Biology is complicated, […]
Swallowed Whole – a comb jelly preying on a comb jelly. Just awesome! #ctenophora