|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||External Literature Search||Age range and collections|
Reptilia - Testudines
It was recombined as Plastomenus thomasi by Hay (1908); it was considered a nomen dubium by Joyce and Lyson (2010); it was recombined as Plastomenus thomasii by Cope (1873), Cope (1875), Hay (1902) and Vitek and Joyce (2015).
|Year||Name and author|
|1871||Trionyx thomasii Cope p. 462|
|1873||Plastomenus thomasii Cope|
|1875||Plastomenus thomasii Cope p. 35|
|1902||Plastomenus thomasii Hay|
|1908||Plastomenus thomasi Hay p. 474 figs. Text-figs. 633-637|
|1908||Plastomenus visendus Hay p. 476 figs. Plate 87, figs. 1, 2; text-figs, 636, 637|
|1908||Plastomenus tantillus Hay p. 478 figs. Figs. 638, 639|
|2015||Plastomenus thomasii Vitek and Joyce|
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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.