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Elasmosaurus
Taxonomy
Elasmosaurus was named by Cope (1868) [Sepkoski's age data: K Turo-l K Sn]. It is the type genus of Elasmosauridae, Elasmosaurinae.
It was synonymized subjectively with Cimoliosaurus by Lydekker (1889).
It was assigned to Sauropterygia by Cope (1869); to Streptosauria by Cope (1869); to Elasmosaurinae by Welles (1962); to Plesiosauria by Williston (1903), Williston (1906), Sepkoski (2002); to Elasmosauridae by Cope (1871), Cope (1875), Seeley (1892), Hay (1902), Wegner (1914), Hay (1930), White (1940), Welles (1943), Welles (1949), Brown (1981), Carroll (1988), Storrs (1999), Carpenter (1999), Sachs (2005), Ketchum and Benson (2010); and to Styxosaurinae by Otero (2016).
It was synonymized subjectively with Cimoliosaurus by Lydekker (1889).
It was assigned to Sauropterygia by Cope (1869); to Streptosauria by Cope (1869); to Elasmosaurinae by Welles (1962); to Plesiosauria by Williston (1903), Williston (1906), Sepkoski (2002); to Elasmosauridae by Cope (1871), Cope (1875), Seeley (1892), Hay (1902), Wegner (1914), Hay (1930), White (1940), Welles (1943), Welles (1949), Brown (1981), Carroll (1988), Storrs (1999), Carpenter (1999), Sachs (2005), Ketchum and Benson (2010); and to Styxosaurinae by Otero (2016).
Synonymy list
| Year | Name and author |
|---|---|
| 1868 | Elasmosaurus Cope p. 264 |
| 1869 | Elasmosaurus Cope p. 44 |
| 1871 | Elasmosaurus Cope p. 235 |
| 1875 | Elasmosaurus Cope p. 15 |
| 1892 | Elasmosaurus Seeley p. 151 |
| 1902 | Elasmosaurus Hay p. 458 |
| 1903 | Elasmosaurus Williston p. 9 |
| 1906 | Elasmosaurus Williston p. 222 |
| 1914 | Elasmosaurus Wegner p. 289 |
| 1930 | Elasmosaurus Hay p. 117 |
| 1940 | Elasmosaurus White p. 466 |
| 1943 | Elasmosaurus Welles |
| 1949 | Elasmosaurus Welles |
| 1962 | Elasmosaurus Welles p. 4 |
| 1981 | Elasmosaurus Brown p. 340 |
| 1988 | Elasmosaurus Carroll |
| 1999 | Elasmosaurus Carpenter p. 150 |
| 1999 | Elasmosaurus Storrs p. 3 |
| 2002 | Elasmosaurus Sepkoski |
| 2005 | Elasmosaurus Sachs |
| 2010 | Elasmosaurus Ketchum and Benson p. 15 |
| 2016 | Elasmosaurus Otero |
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If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.
G. †Elasmosaurus Cope 1868
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†Elasmosaurus marshi Williston 1906
†Elasmosaurus platyurus Cope 1868
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Invalid names: Discosaurus carinatus Cope 1868 [objective synonym]
Diagnosis
No diagnoses are available