Braincase Anatomy of the Titanosaurian Sauropod<i>Lirainosaurus astibiae</i>from the Late Cretaceous of the Iberian Peninsula

Díaz, Verónica Díez; Suberbiola, Xabier Pereda; García, José Luis Sanz

doi:10.4202/app.2010.0043

Cited by 34 publications

(34 citation statements)

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“…In fact, it is the best-known titanosaur from the Iberian Peninsula. In recent years, several papers have been produced with a revised description of the published material, as well as new remains referred to this titanosaur, i.e., new cranial specimens such as a braincase (Díez Díaz et al, 2011) and a large sample of teeth that show ontogenetic variation . Postcranial remains from other Spanish localities have also been referred to Lirainosaurus (Company et al, 2009;Ortega and Pérez-García, 2009).…”

Section: Introductionmentioning

confidence: 99%

“…All this previous work and the detailed description of the material (Sanz et al, 1999;Company et al, 2009;Company, 2011;Díez Díaz et al, 2011, 2012, 2013, as well as its inclusion in numerous phylogenetic analyses, have made Lirainosaurus astibiae one of the world's best-known titanosaurian species, and a main reference for the study of the sauropod faunas of the Late Cretaceous of Europe.…”

Section: Introductionmentioning

confidence: 99%

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Appendicular osteology ofDreadnoughtus schrani, a giant titanosaurian (Sauropoda, Titanosauria) from the Upper Cretaceous of Patagonia, Argentina

Ullmann

Lacovara

2016

Journal of Vertebrate Paleontology

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Lirainosaurus astibiae is the best-known titanosaurian sauropod species from the Iberian Peninsula. It was described by Sanz and collaborators in 1999 on the basis of several cranial and postcranial remains from the Late Cretaceous of Laño (northern Spain); new remains from this and other Iberian fossil-sites have recently been referred to this species. This paper focuses on the description of the appendicular skeleton and dermal armour of Lirainosaurus. Comparison with other European titanosaurs confirms that Lirainosaurus astibiae clearly differs from them, and highlights two diagnostic appendicular features: the presence of a dorsal prominence together with a ventral ridge on the medial surface of the scapular blade, and the combination of an anterolateral process and an anteroventral ridge on the sternal plate. Equations for predicting body mass and size in sauropods suggest a body size up to 6 meters and a body mass of at least 2-4 tonnes for the largest individuals of Lirainosaurus astibiae, it being one of the most slender titanosaurs found to date. The study of the non-axial postcranial skeleton supports the hypothesis that Lirainosaurus astibiae is a derived lithostrotian close to Saltasauridae.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Appendicular osteology ofDreadnoughtus schrani, a giant titanosaurian (Sauropoda, Titanosauria) from the Upper Cretaceous of Patagonia, Argentina

Ullmann

Lacovara

2016

Journal of Vertebrate Paleontology

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“…Besides, the Laño fluvial beds have yielded fossil remains leading to the erection of a number of reptilian taxa that are widely represented in the latest Cretaceous localities of Europe, such as the turtles Solemys and Dortoka (Lapparent de Broin and Murelaga, 1999;Pérez-García et al, 2012a) and the crocodilians Acynodon and Musturzabalsuchus (Buscalioni et al, 1999;Martin and Delfino, 2010). With regard to the dinosaurs, the non-avian theropod association of Laño is the most diversified of the Campanian-Maastrichtian of Europe (Torices et al, in press); and the sauropod Lirainosaurus is currently the best known titanosaur of Europe (Díez Díaz et al, 2011, 2013a, 2103bDíez Díaz, 2013 Thies, 1989;Wenz, 2002, 2005), so they probably do not represent a distinct taxon and are better considered Neopterygii indet. The most abundant taxon is by far Paralbula sp.…”

Section: Significance Of the Vertebrate Associations From The Laño Qumentioning

confidence: 99%

“…7), appendicular bones and osteoderms . New material, including basicranial, axial and appendicular elements, provides further information about the skeletal anatomy of Lirainosaurus (Díez Díaz et al, 2011, 2013a, 2013b, 2013cDíez Díaz, 2013). Besides Laño, remains of Lirainosaurus have also described in other Iberian sites (Company et al, 2009;Ortega and Pérez-García, 2009;Díez Díaz, 2013).…”

Section: Sauropodsmentioning

confidence: 99%

“…Other papers dealt with the petrological and geochemical features of the Laño vertebrate fossils (Elorza et al, 1999;Lécuyer et al, 2003 and Corrigendum), as well as the taphonomic features of the terrestrial and freshwater vertebrate assemblages (Pereda Suberbiola et al, 2000). Recent papers on Laño deal with the description of a new species of the mammal Lainodon (Gheerbrant and Astibia, 2012), the revision of the titanosaurian sauropod Lirainosaurus (Díez Díaz et al, 2011, 2013a, 2013bDíez Díaz, 2013) and the dortokid turtle Dortoka (Pérez-García et al, 2012a), and the description of the theropod teeth assemblage (Torices, 2007;Torices et al, in press), among others. In the sublittoral beds of Albaina, the first dinosaur and turtle remains have recently been described (Pereda- Suberbiola et al, in press).…”

Section: Introductionmentioning

confidence: 99%

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Late cretaceous continental and marine vertebrate assemblages from the Laño quarry (Basque-Cantabrian Region, Iberian Peninsula): an update

Suberbiola

Corral²,

Astibia

et al. 2015

Journal of Iberian Geology

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The vertebrate-bearing beds of the Laño quarry (Condado de Treviño) are among the most relevant sites from the Late Cretaceous of Europe. Geologically, Laño and the adjacent region are set on the southern limb of the South-Cantabrian Synclinorium (SE Basque-Cantabrian Region, northern Iberian Peninsula). The Laño sites were discovered in 1984; thousands of bones and teeth, including microfossils, have been collected during the prospection in the field and excavation campaigns. The vertebrate remains occur at two different stratigraphic horizons within a continental to shallow marine succession of Late Campanian-Maastrichtian age. The lower horizon contains the Laño 1 and Laño 2 sites, whereas the upper horizon contains the Albaina site. In the Laño sites, three fossiliferous beds (called L1A, L1B and L2) are known within an alluvial system composed mainly of fluvial sands and silts. The sedimentary structures are consistent with channel areas within an extensive braided river system. Based mainly on stratigraphic correlations, the fluvial beds of Laño are regarded as Late Campanian to Early Maastrichtian in age. These deposits have yielded a very diverse vertebrate assemblage, which consists of nearly 40 species, including actinopterygians, lissamphibians, lepidosaurs, turtles, crocodyliforms, dinosaurs, pterosaurs, and mammals. Seven genera and ten species have been erected to date in Laño. With reference to the marine vertebrate association of Albaina, it consists of at least 37 species, including sharks and rays, actinopterygians, mosasaurids, and plesiosaurs. Two genera and species of rhinobatoids (family indet.) and two new species of rhinobatids have been erected in Albaina. The fossil association indicates a Late (but not latest) Maastrichtian age. Recently, isolated turtle and dinosaur fossils have been discovered in the sublittoral beds of Albaina. The Laño quarry is one of the most noteworthy Campanian-Maastrichtian vertebrate localities of Europe by its taxonomic diversity, and provides useful information about the composition and affinities of both continental and marine vertebrate faunas from the latest Cretaceous of southwestern Europe.

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Neuroanatomy of Titanosaurid Dinosaurs From the Upper Cretaceous of Patagonia, With Comments on Endocranial Variability Within Sauropoda

Paulina‐Carabajal

2012

The Anatomical Record

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The purpose of this study is to provide a detailed description of the neuroanatomy of Bonatitan, Antarctosaurus, and an unnamed titanosaur from Río Negro, Argentina including the first observations on the inner ear of the two first taxa using CT scans. The materials were compared with previously described sauropod endocasts and other less complete titanosaur braincases from Argentina. The cranial endocasts show the general morphology of other sauropods being bulbous, anteroposteriorly short and transversely wide, and with enlarged and posteroventrally projected pituitary body. Particular titanosaur traits are the extremely short and horizontal olfactory tract, the absence of a floccular process and a single root for cranial nerve XII. In addition, in the basicranium the abducens nerve (CN VI) does not penetrates the pituitary fossa and the internal carotid artery enters the medial aspect of the basipterygoid process, resulting in an external opening for this vessel that is not visible in lateral view of the braincase. The titanosaurid inner ear also exhibits particular traits, such as robust semicircular canals, and anterior and posterior semicircular canals that are subequal in size. The variation observed in the sauropod endocranium indicates an evolutionary tendency in titanosaurs toward the anteroposterior shortening of the midbrain, and the reduction in size of the semicircular canals of the inner ear, in particular the anterior semicircular canal. This, together with the lack of floccular process suggests a narrower range of movements of the head for this clade.

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Braincase Anatomy of the Titanosaurian SauropodLirainosaurus astibiaefrom the Late Cretaceous of the Iberian Peninsula

Cited by 34 publications

References 22 publications

Appendicular osteology ofDreadnoughtus schrani, a giant titanosaurian (Sauropoda, Titanosauria) from the Upper Cretaceous of Patagonia, Argentina

Appendicular osteology ofDreadnoughtus schrani, a giant titanosaurian (Sauropoda, Titanosauria) from the Upper Cretaceous of Patagonia, Argentina

Late cretaceous continental and marine vertebrate assemblages from the Laño quarry (Basque-Cantabrian Region, Iberian Peninsula): an update

Neuroanatomy of Titanosaurid Dinosaurs From the Upper Cretaceous of Patagonia, With Comments on Endocranial Variability Within Sauropoda

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