Postcranial axial skeleton ofEuropasaurus holgeri(Dinosauria, Sauropoda) from the Upper Jurassic of Germany: implications for sauropod ontogeny and phylogenetic relationships of basal Macronaria

Abstract

Taylor & Francis makes every effort to ensure the accuracy of all the information (the "Content") contained in the publications on our platform. However, Taylor & Francis, our agents, and our licensors make no representations or warranties whatsoever as to the accuracy, completeness, or suitability for any purpose of the Content. Any opinions and views expressed in this publication are the opinions and views of the authors, and are not the views of or endorsed by Taylor & Francis. The accuracy of the Content should not be relied upon and should be independently verified with primary sources of information. Taylor and Francis shall not be liable for any losses, actions, claims, proceedings, demands, costs, expenses, damages, and other liabilities whatsoever or howsoever caused arising directly or indirectly in connection with, in relation to or arising out of the use of the Content.

A new multi-faceted framework for deciphering diplodocid ontogeny

“…documented cranial changes between immature and mature specimens of Diplodocus (or Diplodocinae indeterminate [Tschopp et al, 2015]), which include the development of proportionally larger orbits, rounded and narrower premaxilla, and a more anteriorly situated tooth row. Wedel (2003Wedel ( , 2005Wedel ( , 2009, Schwarz et al (2007a), and Carballido and Sander (2014) have demonstrated that the complexity of pneumatic architecture has increased through sauropodomorph phylogeny and likewise increased through ontogeny. Salgado (1999) suggested a link between the degree of neural spine bifurcation and ontogeny in diplodocids.…”

“…Woodruff and Fowler (2012) showed that small (presumably immature) diplodocids exhibited rounded to weakly bifurcated neural spines, whereas neural spines were fully bifurcated in larger (and presumably more mature) individuals. Based on this observation, it was suggested that the degree of bifurcation could be used to infer maturity in diplodocids (and other methodologies have used morphology to predict maturity; such as the Morphologic Ontogenetic Stage [MOS] of Carballido and Sander, 2014; or the ontogenetic trajectory stages of Ikejiri et al, 2005).…”

El Registro De Sauropodomorpha (Dinosauria) De La Argentina

“…Sin embargo, nueva información proveniente de la anatomía dentaria ubica a Amygdalodon por fuera de Eusauropoda (Carballido y Pol, 2010;Carballido y Sander, 2013).…”

“…Hasta la fecha, la filogenia de jerarquías altas de los saurópodos está relativamente bien establecida, compuesta por Sauropoda basales (e.g., Lessemsaurus Bonaparte, 1999, del (Carballido y Sander, 2013) (Fig. 1.2).…”

“…Ligabuesaurus está representado por un esqueleto incompleto y fue originalmente referido como un titanosaurio basal por Bonaparte et al (2006), quienes subrayaron la presencia de miembros anteriores relativamente largos, sugiriendo que esta condición no era exclusiva de los Brachiosauridae. Estudios filogené-ticos recientes ubican a este taxón como un miembro basal de Titanosauriformes (Carballido y Sander, 2013) No fue sino hasta la década del ochenta que los registros de este clado de macronarios se hicieron recurrentes gracias a las expediciones sistemáticas realizadas por el paleontólogo José F. Bonaparte y que luego continuarán sus discípulos. Se presenta a continuación el registro de titanosaurios bajo un orden estratigráfico.…”