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Kayentapus nananensis
Taxonomy
Chongqingpus nananensis was named by Yang and Yang (1987). It is considered to be a form taxon. Its type specimen is CFNY1, a footprint, and it is a trace fossil. Its type locality is Nan'an tracksite, which is in a Bajocian terrestrial siliciclastic in the Shaximiao Formation of China. It is the type species of Chongqingpus.
It was recombined as Kayentapus nananensis by Lockley et al. (2013), Xing et al. (2013), Li et al. (2021); it was misspelled as Chongqingpus nanasensis by Gand et al. (2018), Xing et al. (2018), Xing et al. (2019), Xing et al. (2021), Foster et al. (2025).
It was recombined as Kayentapus nananensis by Lockley et al. (2013), Xing et al. (2013), Li et al. (2021); it was misspelled as Chongqingpus nanasensis by Gand et al. (2018), Xing et al. (2018), Xing et al. (2019), Xing et al. (2021), Foster et al. (2025).
Synonymy list
| Year | Name and author |
|---|---|
| 1987 | Chongqingpus nananensis Yang and Yang p. 13 |
| 2009 | Chongqingpus nananensis Xing et al. p. 23 |
| 2013 | Kayentapus nananensis Lockley et al. p. 6 |
| 2013 | Kayentapus nananensis Xing et al. p. 121 |
| 2018 | Chongqingpus nanasensis Gand et al. p. 205 |
| 2018 | Chongqingpus nananensis Xing et al. p. 1749 |
| 2019 | Chongqingpus nananensis Xing et al. p. 516 |
| 2021 | Kayentapus nananensis Li et al. p. 19 |
| 2021 | Chongqingpus nananensis Xing et al. p. 199 |
| 2025 | Chongqingpus nananensis Foster et al. p. 310 |
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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.
†Kayentapus nananensis Yang and Yang 1987
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| J. R. Foster et al. 2025 | Tracks of a tridactyl-tetradactyl biped; Digit I sometimes present as a toe-tip-only imprint. Digit I imprint “half rotated” (oriented anteromedially rather than anteriorly). Digits IIeIV curved inward, with straight digital pads and sharp claw imprints. Digital formula 2-2-3-4. |
Measurements
No measurements are available
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| Source: o = order | |||||
| References: Kiessling 2004, Marsh 1875 | |||||