Priapulimorphida is the sole order within the Priapulimorpha, one of the three extant Priapulid classes.

References

  1. ^ 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.


Allikas: https://en.wikipedia.org/wiki/Priapulimorpha
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