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Pankinosternoidea
Taxonomy
Pankinosternoidea was named by Joyce et al. (2004).
It was assigned to Chelydroidea by Joyce and Bourque (2016); and to Chelydroidea by Lyson et al. (2017).
It was assigned to Chelydroidea by Joyce and Bourque (2016); and to Chelydroidea by Lyson et al. (2017).
Subtaxa
Synonymy list
| Year | Name and author |
|---|---|
| 2004 | Pankinosternoidea Joyce et al. |
| 2016 | Pankinosternoidea Joyce and Bourque |
| 2017 | Pankinosternoidea Lyson et al. |
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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.
Unr. †Pankinosternoidea Joyce et al. 2004
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G. †Planetochelys Weems 1988
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†Planetochelys dithyros Hutchison 2013
†Planetochelys savoiei Weems 1988
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| T. R. Lyson et al. 2017 | a reduced cruciform plastron, true costiform processes (sensu Joyce, 2007) that cross peripheral I and terminate in peripheral II or III on the visceral shell surface, absence of extragulars, absence of pectorals, absence of a midline contact between the abdominals, and less than four inframarginals, |