Where does “pyrstökäs” come from?
pyrstökäs (Finnish) comes from Finnish pyrstö, from Proto-Germanic burstiz, from Proto-Germanic bʰurstís, from Proto-Indo-European bʰr̥s-tí-s, from Proto-Indo-European bʰers- — top, tip, point.
pyrstökäs (Finnish): larvacean
Ancestry of “pyrstökäs”, step by step