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Youngoolithus
Taxonomy
Youngoolithus was named by Zhao (1979). It is considered to be a form taxon.
It was assigned to Faveoloolithidae by Zhao (1979), Mikhailov (1991), Mikhailov et al. (1994), Cousin (2002), Simón (2006), Liang et al. (2009) and Fernández (2013); and to Youngoolithidae by Zhang (2010) and Zheng et al. (2018).
It was assigned to Faveoloolithidae by Zhao (1979), Mikhailov (1991), Mikhailov et al. (1994), Cousin (2002), Simón (2006), Liang et al. (2009) and Fernández (2013); and to Youngoolithidae by Zhang (2010) and Zheng et al. (2018).
Species
Synonymy list
| Year | Name and author |
|---|---|
| 1979 | Youngoolithus Zhao p. 304 |
| 1991 | Youngoolithus Mikhailov p. 217 |
| 1994 | Youngoolithus Mikhailov et al. p. 92 |
| 2002 | Youngoolithus Cousin p. 46 |
| 2006 | Youngoolithus Simón p. 518 |
| 2009 | Youngoolithus Liang et al. p. 1591 |
| 2010 | Youngoolithus Zhang p. 218 |
| 2013 | Youngoolithus Fernández p. 94 |
| 2018 | Youngoolithus Zheng et al. p. 900 |
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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.
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| S.-K. Zhang 2010 | See the revised diagnosis of the type oospecies, Y. xiaguanensis. |