New rebbachisaurid (Dinosauria: Sauropoda) material from the Wessex Formation (Barremian, Early Cretaceous), Isle of Wight, United Kingdom

Mannion, Philip D.; Upchurch, Paul; Hutt, Stephen

doi:10.1016/j.cretres.2011.05.005

Cited by 39 publications

(51 citation statements)

References 27 publications

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“…The joined spinoprezygapophyseal and spinodiapophyseal laminae enclose a triangular fossa, here interpreted as autapomorphic for T. hannibalis. The spinoprezygapophyseal lamina fails to contact the spinopostzygapophyseal lamina, differing from the Limaysaurinae 19 . The postspinal lamina does not expand mediolaterally as in other Nigersaurinae 19 .…”

Section: Systematic Palaeontologymentioning

confidence: 91%

“…Large elliptical pleurocoels open on the lateral surface of the anteriormost caudal centra. The boss-like eminence anteroventral to the prezygapophyses as in European Nigersaurinae is absent 19,20 . In anterior view, the neural spines are 'petal-shaped', as in most diplodocoids 21 .…”

Section: Systematic Palaeontologymentioning

confidence: 99%

“…The spinoprezygapophyseal lamina fails to contact the spinopostzygapophyseal lamina, differing from the Limaysaurinae 19 . The postspinal lamina does not expand mediolaterally as in other Nigersaurinae 19 . The dorsal surface of the left postzygapophysis in the fourth caudal shows a 'hinge-like' structure formed by a series of transversely oriented indentations.…”

Section: Systematic Palaeontologymentioning

confidence: 99%

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A new sauropod dinosaur from the Early Cretaceous of Tunisia with extreme avian-like pneumatization

Fanti

Cau²,

Hassine

et al. 2013

Nat Commun

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Section: Systematic Palaeontologymentioning

confidence: 91%

Section: Systematic Palaeontologymentioning

confidence: 99%

Section: Systematic Palaeontologymentioning

confidence: 99%

See 1 more Smart Citation

A new sauropod dinosaur from the Early Cretaceous of Tunisia with extreme avian-like pneumatization

Fanti

Cau²,

Hassine

et al. 2013

Nat Commun

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“…To associate the trackway PT1 with a specific group of sauropods is not really prudent. Nonetheless, discarding titanosaurs, the other main group of sauropods that inhabited Europe during the late Early Cretaceous were the rebbachisaurids (Mannion et al, 2011;Torcida Fernández-Baldor et al, 2011). The morphology of rebbachisaurid tracks so far is not well understood.…”

Section: Discussionmentioning

confidence: 99%

Dinosaur tracks from the Early Cretaceous of Parede tracksite (Cascais, Portugal): New implications on the sauropod palaeobiology of the Iberian Peninsula

Santos

Callapez

Castanera

et al. 2015

Journal of Iberian Geology

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A recently discovered Early Cretaceous (early late Albian) dinosaur tracksite at Parede beach (Cascais, Portugal) reveals evidence of dinoturbation and at least two sauropod trackways. One of these trackways can be classified as narrow-gauge, which represents unique evidence in the Albian of the Iberian Peninsula and provides for the improvement of knowledge of this kind of trackway and its probable trackmaker, in an age when the sauropod record is scarce. These dinosaur tracks are preserved on the upper surface of a marly limestone bed that belongs to the Galé Formation (Água Doce Member, middle to lower upper Albian). The study of thin-sections of the beds C22/24 and C26 in the Parede section has revealed a microfacies composed of foraminifers, radiolarians, ostracods, corals, bivalves, gastropods, and echinoids in a mainly wackestone texture with biomicritic matrix. These assemblages match with the lithofacies, marine molluscs, echinids, and ichnofossils sampled from the section and indicate a shallow marine, inner shelf palaeoenvironment with a shallowing-upward trend. The biofacies and the sequence analysis are compatible with the early late Albian age attributed to the tracksite. These tracks and the moderate dinoturbation index indicate sauropod activity in this palaeoenvironment. Titanosaurs can be dismissed as possible trackmakers on the basis of the narrow-gauge trackway, and probably by the kidney-shaped manus morphology and the pes-dominated configuration of the trackway. Narrow-gauge sauropod trackways have been positively associated with coastal palaeoenvironments, and the Parede tracksite supports this interpretation. In addition, this tracksite adds new data about the presence of sauropod pes-dominated trackways in cohesive substrates. As the Portuguese Cretaceous sauropod osteological remains are very scarce, the Parede tracksite yields new and relevant evidence of these dinosaurs. Furthermore, the Parede tracksite is the youngest evidence of sauropods in the Portuguese record and some of the rare evidence of sauropods in Europe during the Albian. This discovery enhances the palaeobiological data for the Early Cretaceous Sauropoda of the Iberian Peninsula, where the osteological remains of these dinosaurs are relatively scarce in this region of southwestern Europe. Therefore, this occurrence is also of overall interest due to its impact on Cretaceous Sauropoda palaeobiogeography.Keywords: Sauropod tracks, intertidal palaeoenvironment, Lower Cretaceous, upper Albian, Lusitanian Basin, Portugal Resumen El reciente descubrimiento de huellas de dinosaurios del Cretácico Inferior (inicio del Albiense tardío) en la playa de Parede (Cascais, Portugal) ha revelado evidencias de dinoturbación y al menos dos rastros de saurópodos. Uno de ellos puede clasificarse como estrecho y representa la única evidencia de este tipo de rastros en el Albiense de la Península Ibérica. Estos nuevos datos permiten mejorar el conocimiento tanto de este tipo de rastros como de su posible productor, en una edad en la...

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“…Mannion (2009) described a partial rebbachisaurid scapula MIWG 6544. Finally, Mannion et al (2011) described a proximal caudal neural arch MIWG 5384, which they also interpreted as rebbachisaurid. All of these specimens are from the Barremian Wessex Formation of the Isle of Wight, so they could all belong to the same species or genus.…”

Section: We a L D E N Re B B A C H I S A U R Smentioning

confidence: 99%

Xenoposeidon is the earliest known rebbachisaurid sauropod dinosaur

Taylor

2017

Preprint

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Xenoposeidon proneneukos is a sauropod dinosaur represented by a single partial dorsal vertebra, NHMUK R2095, which consists of the centrum and the base of a tall neural arch.Despite its fragmentary nature, it is recognisably distinct from all other sauropods, and is here diagnosed with five unique characters. One character previously considered unique is here recognised as shared with Rebbachisaurus garasbae: an "M"-shaped arrangement of laminae on the lateral face of the neural arch. Following the more complete Rebbachisaurus garasbae, these laminae are now interpreted as ACPL and lateral CPRL, which intersect anteriorly; and PCDL and CPOL, which intersect posteriorly. Similar arrangements are also seen in some other rebbachisaurid specimens (though not all, possibly due to serial variation), but never in non-rebbachisaurid sauropods. Xenoposeidon is therefore referred to Rebbachisauridae. Due to its elevated parapophysis, the holotype vertebra is considered a posterior dorsal despite its elongate centrum. Since Xenoposeidon is from the from the Berriasian-Valanginian (earliest Cretaceous) Ashdown Beds Formation of the Wealden Supergroup of southern England, it is the earliest known rebbachisaurid by some 10 million years. Electronic 3D models were invaluable in determining X e n o p o s e i d o n i s t h e e a r l i e s t k n o wn r e b b a c h i s a u r i d s a u r o p o d d i n o s a u rMichael P. Taylor. Department of Earth Sciences, University of Bristol, Bristol BS8 1RJ, England. dino@miketaylor.org.uk Ab s t r a c tXenoposeidon proneneukos is a sauropod dinosaur represented by a single partial dorsal vertebra, NHMUK R2095, which consists of the centrum and the base of a tall neural arch. Despite its fragmentary nature, it is recognisably distinct from all other sauropods, and is here diagnosed with five unique characters. One character previously considered unique is here recognised as shared with Rebbacdisaurus garasbae: an "M"-shaped arrangement of laminae on the lateral face of the neural arch. Following the more complete Rebbacdisaurus garasbae, these laminae are now interpreted as ACPL and lateral CPRL, which intersect anteriorly; and PCDL and CPOL, which intersect posteriorly. Similar arrangements are also seen in some other rebbachisaurid specimens (though not all, possibly due to serial variation), but never in non-rebbachisaurid sauropods. Xenoposeidon is therefore referred to Rebbachisauridae. Due to its elevated parapophysis, the holotype vertebra is considered a posterior dorsal despite its elongate centrum. Since Xenoposeidon is from the from the Berriasian-Valanginian (earliest Cretaceous) Ashdown Beds Formation of the Wealden Supergroup of southern England, it is the earliest known rebbachisaurid by some 10 million years. Electronic 3D models were invaluable in determining Xenoposeidon's true affinities: descriptions of complex bones such as sauropod vertebrae should always provide them where possible.

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New rebbachisaurid (Dinosauria: Sauropoda) material from the Wessex Formation (Barremian, Early Cretaceous), Isle of Wight, United Kingdom

Cited by 39 publications

References 27 publications

A new sauropod dinosaur from the Early Cretaceous of Tunisia with extreme avian-like pneumatization

A new sauropod dinosaur from the Early Cretaceous of Tunisia with extreme avian-like pneumatization

Dinosaur tracks from the Early Cretaceous of Parede tracksite (Cascais, Portugal): New implications on the sauropod palaeobiology of the Iberian Peninsula

Xenoposeidon is the earliest known rebbachisaurid sauropod dinosaur

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