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Obelignathus septimanicus
Taxonomy
Rhabdodon septimanicus was named by Buffetaut and Le Loeuff (1991). Its type specimen is MDE D30, a mandible (right dentary missing the anteriormost portion), and it is a 3D body fossil. Its type locality is Montouliers, Saint-Chinian, which is in a Campanian/Maastrichtian terrestrial horizon in the Grès à Reptiles Formation of France. It is the type species of Obelignathus.
It was recombined as Obelignathus septimanicus by Czepiński and Madzia (2025).
It was recombined as Obelignathus septimanicus by Czepiński and Madzia (2025).
Synonymy list
| Year | Name and author |
|---|---|
| 1991 | Rhabdodon septimanicus Buffetaut and Le Loeuff |
| 1995 | Rhabdodon septimanicus Le Loeuff and Buffetaut p. 183 |
| 1997 | Rhabdodon septimanicus Le Loeuff p. 454 |
| 1998 | Rhabdodon septimanicus Le Loeuff p. 56 |
| 2004 | Rhabdodon septimanicus Norman p. 414 |
| 2005 | Rhabdodon septimanicus Buffetaut p. 44 |
| 2016 | Rhabdodon septimanicus Dieudonné et al. p. 2 |
| 2017 | Rhabdodon septimanicus Godefroit et al. p. 1 |
| 2019 | Rhabdodon septimanicus Párraga and Prieto-Márquez p. 254 |
| 2025 | Obelignathus septimanicus Czepiński and Madzia 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.
†Obelignathus septimanicus Buffetaut and Le Loeuff 1991
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| Ł. Czepiński and D. Madzia 2025 | A medium-sized rhabdodontomorph dinosaur with the following unique combination of
characters (*previously identified autapomorphy; **newly identified autapomorphy): (1)** Dentary bone with a robust appearance, being anteroposteriorly shorter (with the main body of the dentary being about 3 times longer than high), labiolingually wider, and dorsoventrally higher than in other rhabdodontomorphs (where the dentary is about 4 times longer than high); (2)* Absence of the buccal platform lateral to the alveolar row; (3)** Absence of the horizontal buccal crest in the posterior part of the dentary due to the poorly developed anterolateral ridge of the coronoid process; (4)* Coronoid process of the dentary placed directly posterior to the alveolar row, resulting in contact with a surangular being in line with the alveolar row and not displaced laterally as in other rhabdodontomorphs; (5)** Coronoid process rotated lateroposteriorly, such as the lateral and coronoid surfaces of the process face, respectively, more posteriorly and more anteriorly than in other rhabdodontomorphs; (6)** Meckelian canal mediolaterally and dorsoventrally deep, reaching 50% of the height of the medial wall of dentary below the alveolar groove (in other rhabdodontomorphs the dorsoventral height of the Meckelian canal is up to 33% of the medial height of the dentary wall). |
Measurements
No measurements are available
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| Source: subo = suborder, o = order | |||||
| References: Benton 1983, Kiessling 2004, Marsh 1875 | |||||
Age range: base of the Late/Upper Campanian to the top of the Early/Lower Maastrichtian or 83.60000 to 66.00000 Ma
Collections (2 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Late/Upper Campanian - Early/Lower Maastrichtian | France (Languedoc-Roussillon) | Ornithopoda indet. (type locality: 68875) Rhabdodon septimanicus (48870) |