A bibliography of early papers on North American plesiosaurs:
The background on Cope's "head-on-the-wrong-end" Elasmosaurus
Copyright © 2002-2009 by Mike EverhartCreated 11/10/2002; Last updated 09/07/2009
LEFT: Figure 33 - "Restoration of Elasmosaurus platyurus, an Upper Cretaceous Plesiosaur" by S. W. Williston, 1914. Water Reptiles of the Past and Present. University of Chicago Press, 250 pp. |
Click for more about KANSAS PLESIOSAURS
For more information on Jurassic plesiosaurs: Adam Smith's The Plesiosaur Directory
For those that are interested in reading some of the original publications as
ePapers, the chronological sequence of papers regarding the discovery, naming,
reconstruction and subsequent controversy regarding American plesiosaurs from Cimoliasaurus
magnus Leidy 1851 and Discosaurus vetustus Leidy 1851 through Elasmosaurus platyurus Cope 1868 is roughly as follows:
Leidy, J., 1851. [Descriptions of a number of fossil reptilian and mammalian remains].
Proc. Acad. Nat. Sci. Phila. 5:325-327. (Cimoliasaurus magnus and Discosaurus
vetustus)
http://www.oceansofkansas.com/Leidy1851.html
Leidy, J., 1854. [Remarks on exhibiting to the Society four vertebrę of a huge extinct
Saurian from Arkansas]. Proc. Acad. Nat. Sci. Phil., 7(3):72,
pl. II. (Brimosaurus grandis; meeting of May 23, 1854)
http://www.oceansofkansas.com/Leidy1854.html
Leidy, J., 1865. Memoir on the extinct reptiles of the Cretaceous formations of the United
States. Smithsonian Contrib. Knowl. XIV (6) 1-135, pls. I-XX. (Section on Cimoliasaurus
magnus and Discosaurus vetustus)
http://www.oceansofkansas.com/Leidy1865.html
Cope, E. D., 1868. [Letter describing Elasmosaurus platyurus]. in LeConte, J. L.,
1868. Notes on the geology of the survey for the extension of the
Union Pacific Railway, E. D., from the Smoky Hill River, Kansas, to the Rio Grande. Review
Printing House, Philadelphia, 76 p. with folded map.
http://www.oceansofkansas.com/LeConte68.html
Cope, E. D., 1868. Remarks on a new enaliosaurian, Elasmosaurus platyurus. Proc.
Acad. Nat. Sci. Phil., 20:92-93. (meeting of March 24, 1868 - First report of the
plesiosaur, Elasmosaurus platyurus)
http://www.oceansofkansas.com/cope1868.html
Cope, E. D., 1868. On a new large enaliosaur. Amer. Jour. Sci. ser. 2, 46(137):263-264.
(Summary of Academy of Science article)
http://www.oceansofkansas.com/cope1868a.html
Cope, E. D., 1868. [On the structure of the vertebral column in Elasmosaurus].
Proc. Acad. Nat. Sci. Phil., 20:181. (meeting of July 14, 1868)
http://www.oceansofkansas.com/Cope1868b.html
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Cope, E. D., 1869. Synopsis of the Extinct Batrachia and Reptilia of North America, Part
I. Trans. Amer. Phil. Soc. New Series, 14:1-235, 51 figs., 11
pls. (pre-print dated August, 1869)
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Cope, E. D., 1869. On the reptilian orders Pythonomorpha and Streptosauria. Proc. Boston Soc. Nat. Hist. XII 250-266. http://www.oceansofkansas.com/cope1869a.html
Cope, E. D., 1869. [Remarks on extinct reptiles]. Proc. Acad. Nat. Sci. Phil. 20:313. (Meeting of Dec. 15, 1968; published February, 1869. Cope's description of Elasmosaurus orientalis. http://www.oceansofkansas.com/Cope1868c.html
Cope, E. D., 1869. [A resolution thanking Dr. Theophilus Turner for his
donation of the skeleton of Elasmosaurus platyurus]. Proc. Acad. Nat. Sci.
Phil., 20:314. (Meeting of December 15, 1868)
http://www.oceansofkansas.com/Cope1869.html
Leidy, J., 1870. [Remarks on Elasmosaurus platyurus]. Proc. Acad. Nat. Sci. Phil.
22:9-10. (meeting of March 8, 1870) Leidy criticizes Cope's
reconstruction of Elasmosaurus and states that Cope had put the head on the wrong
end.
http://www.oceansofkansas.com/Leidy1870.html
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By late April of 1870, Cope had re-described Elasmosaurus platyurus and published
the new description and figures in:
Cope, E. D., 1870*. Synopsis of the extinct Batrachia and Reptilia of North America.
Trans. Amer. Philos. Soc., (n. s.) 14:1-252 + i-viii, 55 figs., 14 pl. (*Revision of Cope,
1869, same title, with publication dated listed as August, 1869, published after March,
1870)
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Leidy, J., 1870. Discosaurus and its allies. Proc. Acad. Nat. Sci. Phil. 22:18-22. (April 5, 1870)
Leidy, J., 1870. On the Elasmosaurus platyurus of Cope. Amer. Jour. Sci. ser.
2, 49(147):392. (May meeting) (a re-printed version of Leidy's criticism of Cope's
original reconstruction).
http://www.oceansofkansas.com/Leidy1870a.html
Leidy, J., 1870. On Discosaurus and its allies. Amer. Jour. Sci., ser. 2,
50(148):139-140.
http://www.oceansofkansas.com/Leidy1870b.html
Cope, E. D., 1870. On Elasmosaurus platyurus Cope. Amer. Jour. Sci., ser. 2,
50(148):140-141. (A response to Leidy's criticism)
http://www.oceansofkansas.com/Cope1870a.html
Cope, E. D., 1870. Additional note on Elasmosaurus. Amer. Jour. Sci., ser. 2,
50(149):268-269. (A second response to Leidy)
http://www.oceansofkansas.com/cope1870b.html
Following Cope's "Additional note" in 1870, the battle regarding Elasmosaurus
was essentially over until the sensationalized newspaper
articles in the New York Herald in January of 1890:
Ballou, W. H., 1890. [Statements by O. C. Marsh and E. D. Cope regarding the "head on
the wrong end" Elasmosaurus]. New York Herald, January 19 and 20, 1890, Vol.
19(No. 508 and 509:pages 11 and 3 respectively), as part of a series by William Ballou.
http://www.oceansofkansas.com/NYHerald.html
For additional information on elasmosaur specimens from the Niobrara Chalk, see: Everhart, M. J. 2006. The occurrence of elasmosaurids (Reptilia: Plesiosauria) in the Niobrara Chalk of Western Kansas. Paludicola 5(4):170-183.