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Macroolithus rugustus
Taxonomy
Oolithes rugustus was named by Young (1965). It is considered to be a form taxon. Its type specimen is IVPP V2788, an egg, and it is a 3D body fossil. Its type locality is IVPP Loc. 6224, Lashuyuan, which is in a Maastrichtian terrestrial sandstone in the Pingling Formation of China.
It was recombined as Macroolithus rugustus by Zhao (1975), Zhao (1978), Zhao (1979), Zhao et al. (1991), Mikhailov (1994), Zhao (1994), Mikhailov (2000), Amo Sanjuán et al. (2000), Cousin (2002), Garcia et al. (2006), Wang et al. (2012), Wang et al. (2016), He et al. (2019) and Simon et al. (2019).
It was recombined as Macroolithus rugustus by Zhao (1975), Zhao (1978), Zhao (1979), Zhao et al. (1991), Mikhailov (1994), Zhao (1994), Mikhailov (2000), Amo Sanjuán et al. (2000), Cousin (2002), Garcia et al. (2006), Wang et al. (2012), Wang et al. (2016), He et al. (2019) and Simon et al. (2019).
Synonymy list
| Year | Name and author |
|---|---|
| 1965 | Oolithes rugustus Young p. 106 figs. Pl. 1-2:1 |
| 1973 | Oolithes rugustus Cheng et al. p. 23 |
| 1975 | Macroolithus rugustus Zhao p. 106 figs. Pl. 1-2:1 |
| 1978 | Macroolithus rugustus Zhao p. 214 |
| 1979 | Macroolithus rugustus Zhao p. 336 |
| 1980 | Oolithes rugustus Chao p. 61 |
| 1989 | Oolithes rugustus Hirsch p. 93 |
| 1991 | Macroolithus rugustus Zhao et al. p. 5 |
| 1992 | Oolithes rugustus Shen and Mateer p. 75 |
| 1994 | Macroolithus rugustus Mikhailov p. 117 |
| 1994 | Macroolithus rugustus Zhao p. 187 |
| 2000 | Macroolithus rugustus Amo Sanjuán et al. p. 13 |
| 2000 | Macroolithus rugustus Mikhailov p. 569 |
| 2002 | Macroolithus rugustus Cousin p. 44 |
| 2006 | Macroolithus rugustus Garcia et al. p. 100 fig. 3 |
| 2012 | Macroolithus rugustus Wang et al. p. 407 |
| 2016 | Macroolithus rugustus Wang et al. p. 2 |
| 2019 | Macroolithus rugustus He et al. p. 353 |
| 2019 | Macroolithus rugustus Simon et al. p. 7 |
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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.
†Macroolithus rugustus Young 1965
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| K. E. Mikhailov 1994 | Predominant range of shell thicknesses (in equatorial part of egg) 1.1-1.3 mm, total range 0.8-1.5 mm (with elements of sculpture up to 1.9 mm, rarely up to 2.2 mm). |