English: Size comparison of the Albertan freshwater elasmosaurid plesiosaur Fluvionectes sloanae. Unknown regions have been filled in with Styxosaurus, Albertonectes, and estimates from the description paper. The diver silhoutte is from File:Scuba33.jpg, which is by NOAA and in the public domain.
References
Campbell, J. A.; Mitchell, M. T.; Ryan, M. J.; Anderson, J. S. (2021). "A new elasmosaurid (Sauropterygia: Plesiosauria) from the non-marine to paralic Dinosaur Park Formation of southern Alberta, Canada". PeerJ9: e10720. DOI:10.7717/peerj.10720.
Otero, R. A. (2016). "Taxonomic reassessment of Hydralmosaurus as Styxosaurus: new insights on the elasmosaurid neck evolution throughout the Cretaceous". PeerJ4: e1777. DOI:10.7717/peerj.1777.
Kubo, T.; Mitchell, M. T.; Henderson, D. M. (2012). "Albertonectes vanderveldei, a new elasmosaur (Reptilia, Sauropterygia) from the Upper Cretaceous of Alberta". Journal of Vertebrate Paleontology32 (3): 557-572.
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