| Basic info | Taxonomic history | Classification | Included Taxa |
| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Yehguia tatsuensis
Taxonomy
Plesiochelys tatsuensis was named by Yeh (1963). Its type specimen is IVPP-V996, a partial shell (incomplete shell, consisting of lateral parts of the carapace and a complete plastron), and it is a 3D body fossil. Its type locality is Gaofengshan, Dazu, which is in a Bathonian/Callovian terrestrial horizon in the Shaximiao Formation of China.
It was recombined as Ferganemys tatsuensis by Nessov and Yulinen (1977) and Sukhanov (2000); it was recombined as Yehguia tatsuensis by Danilov and Parham (2006) and Brinkman et al. (2008).
It was recombined as Ferganemys tatsuensis by Nessov and Yulinen (1977) and Sukhanov (2000); it was recombined as Yehguia tatsuensis by Danilov and Parham (2006) and Brinkman et al. (2008).
Synonymy list
| Year | Name and author |
|---|---|
| 1963 | Plesiochelys tatsuensis Yeh |
| 1977 | Ferganemys tatsuensis Nessov and Yulinen |
| 2000 | Ferganemys tatsuensis Sukhanov pp. 320, 333 |
| 2006 | Yehguia tatsuensis Danilov and Parham pp. 573-579 figs. 2-3 |
| 2008 | Yehguia tatsuensis Brinkman et al. p. 62 |
Is something missing? Join the Paleobiology Database and enter the data
|
|
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.
†Yehguia tatsuensis Yeh 1963
show all | hide all
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| I. G. Danilov and J. F. Parham 2006 | The shell exhibits the following features typical for stem-trionychians: (1) sutural plastron-carapace connection, (2) a relatively large epiplastra, (3) both intergular and gular scutes, (4) an entoplastron that is wider than long, (5) a wide posterior plastral lobe with rounded lateral borders, (6) a sinuous midplastral sulcus, (7) anal scutes that are restricted to the xiphiplastra, (8) four pairs of inframarginal scutes, and (9) sculpturing of the shell surface with fine pits. It differs from other stem-trionychians by the (10) overlapping of marginal scales onto first to fifth costals. It can be separated from adocids by having (11) unreduced ribheads of the costals and from Peltochelys Dollo, 1884 by having (12) eleven pairs of peripherals. It can be distinguished from Xinjiangchelys, a common eucryptodire from the Jurassic of Asia by characters 1, 2, 4, 5, 7 and 9 and from Plesiochelys by characters 2, 5, 6, 9 and 10. |
Measurements
No measurements are available
|
|
||||
|
|
||||
|
|
||||
|
|
||||
| Source: subo = suborder, c = class, subp = subphylum | |||||
| References: Uetz 2005, Carroll 1988, Hendy et al. 2009 | |||||
Collections: one only
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Bathonian - Callovian | China (Chongqing (=Sichuan)) | Yehguia tatsuensis (type locality: 127732) |