Order of priapulid worms
Priapulimorphida is the sole order within the Priapulimorpha, one of the three extant Priapulid classes.
References
- ^ Schram, F. R. (1973). "Pseudocoelomates and a Nemertine from the Illinois Pennsylvanian". Journal of Paleontology. 47 (5). SEPM Society for Sedimentary Geology: 985–989. JSTOR 1303083.