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Rukwatitan bisepultus
Taxonomy
Rukwatitan bisepultus was named by Gorscak et al. (2014). Its type specimen is (RRBP) 07409, a partial skeleton (partial skeleton including three posterior cervical vertebrae, one partial anterior dorsal vertebral neural arch, three anterior caudal vertebrae, six middle ca), and it is a 3D body fossil. Its type locality is Namba 2, which is in a Cenomanian/Campanian fluvial sandstone in the Galula Formation of Tanzania. It is the type species of Rukwatitan.
Synonymy list
| Year | Name and author |
|---|---|
| 2014 | Rukwatitan bisepultus Gorscak et al. p. 1134 figs. 2-12 |
| 2017 | Rukwatitan bisepultus Gorscak et al. p. 2 |
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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.
†Rukwatitan bisepultus Gorscak et al. 2014
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| E. Gorscak et al. 2014 | Titanosaurian sauropod diagnosed by the following
suite of autapomorphies: ventral surface of posterior cervical vertebrae with (1) weakly developed carotid processes posteriorly and (2) paired shallow fossae anteriorly that are not separated by a thin keel; (3) posterior cervical vertebrae with anteroposteriorly elongate and undivided fossa posterior to the anterior centrodiapophyseal lamina that deeply invades the ventral surface of the diapophysis; (4) accessory tubercle on the ventral surface of the cervical rib capitulum, lateral to the capituloparapophyseal suture; (5) deep coracobrachialis fossa on proximal humerus bounded by strong anteriorly projecting deltopectoral crest and strong anteromedial ridge, extending to approximately the humeral midshaft; (6) flattened anterior, medial, lateral, and posterior surfaces at the humeral midshaft, resulting in a subquadrangular cross-section; and (7) pubic peduncle on the ilium that is teardrop-shaped, with the ‘tail’ curving posteriorly, slightly longer transversely than anteroposteriorly. Additionally, the following combination of phylogenetically informative characters assist with the placement of Rukwatitan bisepultus as a basal titanosaurian: undivided pleurocoels on cervical vertebrae; strongly procoelous anterior caudal vertebrae, with the apex of the posterior condyle positioned on the dorsal half of the centrum; pedicles of the neural arch attached to the anterior half of caudal vertebral centrum; unforked chevrons with a deep hemal canal; and squared proximolateral corner of the humerus. Notably, Rukwatitan lacks the ventral longitudinal hollow on the caudal vertebral series typical of many other titanosaurians. |
Measurements
No measurements are available
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| Source: infrao = infraorder | |||||
| Reference: Marsh 1875 | |||||
Age range: base of the Cenomanian to the top of the Campanian or 100.50000 to 72.10000 Ma
Collections: one only
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Cenomanian - Campanian | Tanzania (Mbeya) | Rukwatitan bisepultus (type locality: 156028) |