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Multifissoolithus megadermus
Taxonomy
Oolithes megadermus was named by Young (1959). It is considered to be a form taxon. It is a 3D body fossil. Its type locality is gully between Chiangchunting and Chaochun, Laiyang, which is in a Coniacian/Santonian terrestrial claystone in the Jiangjunding Formation of China.
It was recombined as Spheroolithus megadermus by Zhao (1978), Zhao (1979), Mikhailov (2000), Jackson and Varricchio (2010), Wang et al. (2012), Liu et al. (2013), Zhao et al. (2013), Sellés et al. (2014), Moreno-Azanza et al. (2014) and Zhang et al. (2017); it was recombined as Multifissoolithus megadermus by Zhang (2022).
It was recombined as Spheroolithus megadermus by Zhao (1978), Zhao (1979), Mikhailov (2000), Jackson and Varricchio (2010), Wang et al. (2012), Liu et al. (2013), Zhao et al. (2013), Sellés et al. (2014), Moreno-Azanza et al. (2014) and Zhang et al. (2017); it was recombined as Multifissoolithus megadermus by Zhang (2022).
Synonymy list
| Year | Name and author |
|---|---|
| 1959 | Oolithes megadermus Young p. 34 |
| 1965 | Oolithes megadermus Young p. 169 |
| 1974 | Oolithes megadermus Chao and Chiang p. 76 |
| 1978 | Spheroolithus megadermus Zhao p. 214 |
| 1979 | Spheroolithus megadermus Zhao p. 332 |
| 1980 | Oolithes megadermus Chao p. 61 |
| 1981 | Oolithes megadermus Borgomanero and Leonardi p. 215 |
| 1992 | Oolithes megadermus Shen and Mateer p. 75 |
| 2000 | Spheroolithus megadermus Mikhailov p. 562 |
| 2010 | Spheroolithus megadermus Jackson and Varricchio p. 1144 |
| 2012 | Spheroolithus megadermus Wang et al. p. 406 |
| 2013 | Spheroolithus megadermus Liu et al. p. 284 |
| 2013 | Spheroolithus megadermus Zhao et al. p. 4665 |
| 2014 | Spheroolithus megadermus Moreno-Azanza et al. p. 85 |
| 2014 | Spheroolithus megadermus Sellés et al. p. 725 |
| 2017 | Spheroolithus megadermus Zhang et al. p. 191 |
| 2022 | Multifissoolithus megadermus Zhang p. 61 |
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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.
†Multifissoolithus megadermus Young 1959
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| S.-K. Zhang 2022 | Eggshell 5.7 mm thick composed of cone-shaped eggshell unit assemblages, secondary eggshell units in the large cavities between eggshell unit assemblages and the clefts and pores on outer surface. |
Measurements
No measurements are available
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| Source: subc = subclass, c = class, subp = subphylum | |||||
| References: Hendy et al. 2009, Carroll 1988 | |||||
Collections: one only
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Coniacian - Santonian | China (Shandong) | Oolithes megadermus (type locality: 79742) |