Jørgensen, J. Mørup; Flock, Å.; Wersäll, J. (September 1972). "The Lorenzinian ampullae of Polyodon spathula". Zeitschrift für Zellforschung und Mikroskopische Anatomie. 130 (3): 362–377. doi:10.1007/BF00306949. PMID4560320. S2CID28712903.
Grande, Lance; Jin, Fan; Yabumoto, Yoshitaka; Bemis, William E. (8 July 2002). "Protopsephurus liui, a well-preserved primitive paddlefish (Acipenseriformes: Polyodontidae) from the lower Cretaceous of China". Journal of Vertebrate Paleontology. 22 (2): 209–237. doi:10.1671/0272-4634(2002)022[0209:plawpp]2.0.co;2. ISSN0272-4634. S2CID86258128.
INHS padfish (Report). Prairie Research Institute. Urbana-Champaign, IL: University of Illinois. Spring 2002. Archived from the original on 29 May 2014. Retrieved 28 May 2014.
"State record fish". Kansas Wildlife Parks & Tourism. Retrieved 8 September 2017 – via ksoutdoors.com.
lsu.edu
lamer.lsu.edu
Biology of the Paddlefish(PDF) (Report). NFC Section I. Lamer-Louisiana State University. Archived from the original(PDF) on 14 July 2014. Retrieved 9 June 2014.
Jørgensen, J. Mørup; Flock, Å.; Wersäll, J. (September 1972). "The Lorenzinian ampullae of Polyodon spathula". Zeitschrift für Zellforschung und Mikroskopische Anatomie. 130 (3): 362–377. doi:10.1007/BF00306949. PMID4560320. S2CID28712903.
Jørgensen, J. Mørup; Flock, Å.; Wersäll, J. (September 1972). "The Lorenzinian ampullae of Polyodon spathula". Zeitschrift für Zellforschung und Mikroskopische Anatomie. 130 (3): 362–377. doi:10.1007/BF00306949. PMID4560320. S2CID28712903.
Grande, Lance; Jin, Fan; Yabumoto, Yoshitaka; Bemis, William E. (8 July 2002). "Protopsephurus liui, a well-preserved primitive paddlefish (Acipenseriformes: Polyodontidae) from the lower Cretaceous of China". Journal of Vertebrate Paleontology. 22 (2): 209–237. doi:10.1671/0272-4634(2002)022[0209:plawpp]2.0.co;2. ISSN0272-4634. S2CID86258128.
Biology of the Paddlefish(PDF) (Report). NFC Section I. Lamer-Louisiana State University. Archived from the original(PDF) on 14 July 2014. Retrieved 9 June 2014.
INHS padfish (Report). Prairie Research Institute. Urbana-Champaign, IL: University of Illinois. Spring 2002. Archived from the original on 29 May 2014. Retrieved 28 May 2014.
Grande, Lance; Jin, Fan; Yabumoto, Yoshitaka; Bemis, William E. (8 July 2002). "Protopsephurus liui, a well-preserved primitive paddlefish (Acipenseriformes: Polyodontidae) from the lower Cretaceous of China". Journal of Vertebrate Paleontology. 22 (2): 209–237. doi:10.1671/0272-4634(2002)022[0209:plawpp]2.0.co;2. ISSN0272-4634. S2CID86258128.