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Palaeoscolex is the type genus of the Palaeoscolecid worms, and served as a wastebasket taxon.[1] until its taxonomy was revised and many of its taxa assigned to Wronascolex.[2]

Scientific classification e
Kingdom: Animalia
Class: Palaeoscolecida
Family: Palaeoscolecidae
Genus: Palaeoscolex

The type and only unequivocal species is P. piscatorum, known from mid-trunk segments.[3][4]


  1. ^ Harvey, Thomas H. P.; Dong, Xiping; Donoghue, Philip C. J. (17 March 2010). "Are palaeoscolecids ancestral ecdysozoans?" (PDF). Evolution & Development. 12 (2): 177–200. doi:10.1111/j.1525-142X.2010.00403.x. PMID 20433458.
  2. ^ García-Bellido D.C., Paterson J.R., Edgecombe G.D. 2013. Cambrian palaeoscolecids (Cycloneuralia) from Gondwana and reappraisal of species assigned to ~Palaeoscolex~. Gondwana Res. 24:780–795.
  3. ^ Whittard W.F. 1953. ~Palaeoscolex piscatorum~ gen. et sp. nov., a worm from the Tremadocian of Shropshire. Q. J. Geol. Soc. 109:125–135.
  4. ^ Conway Morris S. 1997. The cuticular structure of the 495-Myr-old type species of the fossil worm ~Palaeoscolex~, ~P. piscatorum~ (?Priapulida). Zool. J. Linn. Soc. 119:69–82.