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Spheroolithus irenensis
Taxonomy
Oolithes irenensis was named by Chao and Chiang (1974). It is considered to be a form taxon. Its type specimen is IVPP ?V-733, an egg, and it is a 3D body fossil. Its type locality is Tungkou, Chiangchunting, Laiyang, which is in a Campanian terrestrial claystone/sandstone in the Jingangkou Formation of China. It is the type species of Paraspheroolithus.
It was recombined as Paraspheroolithus irenensis by Zhao (1979), Yang et al. (1986), Fang et al. (2000), Cousin (2002), Zhou and Feng (2002), Jin (2008), Liang et al. (2009), Wang et al. (2012), Zhao et al. (2013), Wang et al. (2016), Zhang et al. (2017); it was misspelled as Paraspheroolithes irenensis by Currie and Eberth (1993); it was recombined as Spheroolithus irenensis by Mikhailov (2000), Jackson and Varricchio (2010), Sellés et al. (2014), Moreno-Azanza et al. (2014), Hedge et al. (2025).
It was recombined as Paraspheroolithus irenensis by Zhao (1979), Yang et al. (1986), Fang et al. (2000), Cousin (2002), Zhou and Feng (2002), Jin (2008), Liang et al. (2009), Wang et al. (2012), Zhao et al. (2013), Wang et al. (2016), Zhang et al. (2017); it was misspelled as Paraspheroolithes irenensis by Currie and Eberth (1993); it was recombined as Spheroolithus irenensis by Mikhailov (2000), Jackson and Varricchio (2010), Sellés et al. (2014), Moreno-Azanza et al. (2014), Hedge et al. (2025).
Synonymy list
| Year | Name and author |
|---|---|
| 1954 | Oolithes irenensis Young |
| 1974 | Oolithes irenensis Chao and Chiang p. 76 |
| 1979 | Paraspheroolithus irenensis Zhao p. 332 |
| 1986 | Paraspheroolithus irenensis Yang et al. p. 156–157 |
| 1993 | Paraspheroolithes irenensis Currie and Eberth p. 138 |
| 2000 | Paraspheroolithus irenensis Fang et al. p. 110 |
| 2000 | Spheroolithus irenensis Mikhailov p. 562 |
| 2002 | Paraspheroolithus irenensis Cousin p. 45 |
| 2002 | Paraspheroolithus irenensis Zhou and Feng p. 69 |
| 2008 | Paraspheroolithus irenensis Jin p. 53 |
| 2009 | Paraspheroolithus irenensis Liang et al. p. 1590 |
| 2010 | Spheroolithus irenensis Jackson and Varricchio p. 1144 |
| 2012 | Paraspheroolithus irenensis Wang et al. p. 406 |
| 2013 | Paraspheroolithus irenensis Zhao et al. p. 4665 |
| 2014 | Spheroolithus irenensis Moreno-Azanza et al. p. 84 |
| 2014 | Spheroolithus irenensis Sellés et al. p. 725 |
| 2016 | Paraspheroolithus irenensis Wang et al. p. 2 |
| 2017 | Paraspheroolithus irenensis Zhang et al. p. 191 |
| 2025 | Spheroolithus irenensis Hedge et al. p. 12 |
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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.
†Spheroolithus irenensis Chao and Chiang 1974
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Diagnosis
No diagnoses are available