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Cairanoolithus
Taxonomy
Cairanoolithus was named by Vianey-Liaud et al. (1994). It is considered to be a form taxon. Its type is Cairanoolithus dughii. It is the type genus of Cairanoolithidae.
It was assigned to Megaloolithidae by Vianey-Liaud et al. (1994), Garcia and Vianey-Liaud (2001), Vianey-Liaud et al. (2003), Simón (2006), Garcia et al. (2006), Suñer et al. (2008) and Sellés et al. (2013); and to Cairanoolithidae by Sellés and Galobart (2016).
It was assigned to Megaloolithidae by Vianey-Liaud et al. (1994), Garcia and Vianey-Liaud (2001), Vianey-Liaud et al. (2003), Simón (2006), Garcia et al. (2006), Suñer et al. (2008) and Sellés et al. (2013); and to Cairanoolithidae by Sellés and Galobart (2016).
Species
C. dughii (type species), C. roussetensis
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1994 | Cairanoolithus Vianey-Liaud et al. p. 171 |
| 1994 | Dughioolithus Vianey-Liaud et al. p. 171 |
| 2001 | Cairanoolithus Garcia and Vianey-Liaud |
| 2003 | Cairanoolithus Vianey-Liaud et al. p. 584 fig. 5 |
| 2006 | Cairanoolithus Garcia et al. p. 100 fig. 3 |
| 2006 | Cairanoolithus Simón p. 523 |
| 2006 | Dughiloolithus Simón p. 523 |
| 2008 | Cairanoolithus Suñer et al. p. 411 |
| 2013 | Dughioolithus Fernández p. 90 |
| 2013 | Cairanoolithus Sellés et al. p. 13 |
| 2016 | Cairanoolithus Sellés and Galobart p. 585 |
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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.
G. †Cairanoolithus Vianey-Liaud et al. 1994
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†Cairanoolithus dughii Vianey-Liaud et al. 1994
†Cairanoolithus roussetensis Vianey-Liaud et al. 1994
Invalid names: Dughioolithus Vianey-Liaud et al. 1994 [synonym]
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| A. G. Sellés and À. Galobart 2016 | Cairanoolithus is a dinosauroid spherulithic egg type characterised by the following unique combination of characters: large spherical egg (150 – 190 mm in diameter; EL 1⁄4 0.8 – 0.9); shell thickness ranging from 1.10 to 2.65 mm; nearly columnar-shaped shell units not completely interlocking (H:W ratio 1⁄4 1.5:1 to 2.5:1); horizontal to undulating growth lines; slightly ornamented or smooth surface (sagenotuberculate ornamentation); prolatocanaliculate and angusticanaliculate pore systems. |