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Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Romeosaurus
Taxonomy
Romeosaurus was named by Palci et al. (2013).
It was assigned to Yaguarasaurinae by Palci et al. (2013) and Driscoll et al. (2019).
It was assigned to Yaguarasaurinae by Palci et al. (2013) and Driscoll et al. (2019).
Species
Synonymy list
Year | Name and author |
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2013 | Romeosaurus Palci et al. |
2019 | Romeosaurus Driscoll et al. |
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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. †Romeosaurus Palci et al. 2013
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†Romeosaurus fumanensis Palci et al. 2013
†Romeosaurus sorbinii Palci et al. 2013
Diagnosis
Reference | Diagnosis | |
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A. Palci et al. 2013 | Thirteen to 15 strongly recurved maxillary teeth with subcircular cross-sections and weakly developed anterior and posterolateral carinae; maxillary suture for premaxilla low and extending above three tooth positions; straight slanting suture between maxilla and prefrontal; maxillary contribution to external nares between third and eighth maxillary teeth; suture line between surangular and articular ‘V’-shaped in lateral view; short predental rostrum on dentary; suprastapedial process of quadrate bone has bifurcated tip; cervical vertebrae with large hypapophysis (i.e., diameter of hypapophysis is close to the diameter of the centrum). It differs from Russellosaurus, Yaguarasaurus, Tethysaurus, and Pannoniasaurus in: presence of distinct anterolateral lappet rising from the ventral condyle of the quadrate; suture between maxilla and premaxilla extends above three tooth positions (two in Russellosaurus, Yaguarasaurus, Tethysaurus, and Pannoniasaurus); prefrontal and postorbitofrontal contacted each other laterally. It differs from Russellosaurus, Tethysaurus, and Pannoniasaurus in: presence of a predental rostrum on the dentary. It differs from Russellosaurus and Tethysaurus in: the number of maxillary teeth (16 in Russellosaurus, 19–20 in Tethysaurus). It differs from Tethysaurus and Pannoniasaurus in: lack of thin anteromedial crest on shaft of quadrate; suprastapedial process of quadrate extends ventral to midpoint of quadrate shaft; in Tethysaurus and Pannoniasaurus, the height of the tympanic conch is only about half of the height of the quadrate, whereas in Romeosaurus the tympanic conch occupies almost the entire height of the quadrate. |
Measurements
No measurements are available
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Source: f = family, c = class, subp = subphylum, uc = unranked clade | |||||
References: Gervais 1852, Carroll 1988, Hendy et al. 2009 |
Age range: base of the Middle Turonian to the top of the Early/Lower Santonian or 93.50000 to 83.50000 Ma
Collections (3 total)
Time interval | Ma | Country or state | Original ID and collection number |
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Early/Lower Turonian - Middle Turonian | Italy (Verona) | R. sorbinii (148885) | |
Middle Turonian | Italy (Verona) | R. fumanensis (144507) | |
Early/Lower Coniacian - Early/Lower Santonian | Italy (Verona) | R. fumanensis (144508) |