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Polygonodon
Taxonomy
Polygonodon was named by Leidy (1856). Its type is Polygonodon vetus.
It was synonymized subjectively with Mosasaurus by Zittel (1890); it was synonymized subjectively with Xiphactinus by Schwimmer et al. (1997).
It was assigned to Tylosaurinae by Hay (1902); to Mosasaurinae by Hay (1930); and to Mosasauridae by Leidy (1858) and McDowell and Bogert (1954).
It was synonymized subjectively with Mosasaurus by Zittel (1890); it was synonymized subjectively with Xiphactinus by Schwimmer et al. (1997).
It was assigned to Tylosaurinae by Hay (1902); to Mosasaurinae by Hay (1930); and to Mosasauridae by Leidy (1858) and McDowell and Bogert (1954).
Synonymy list
| Year | Name and author |
|---|---|
| 1856 | Polygonodon Leidy p. 221 |
| 1858 | Polygonodon Leidy p. 229 |
| 1902 | Polygonodon Hay p. 473 |
| 1930 | Polygonodon Hay p. 264 |
| 1954 | Polygonodon McDowell and Bogert p. 132 |
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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. †Polygonodon Leidy 1856
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Diagnosis
No diagnoses are available