Por favor, use este identificador para citar o enlazar este ítem:
http://rid.unrn.edu.ar/handle/20.500.12049/5792
Título: | New dicraeosaurid (Sauropoda) remains from the Mulichinco Formation (Valanginian, Lowe Cretaceous), Neuquén Basin, Argentina |
Autor(es): | Windholz, Guillermo José Coria, Rodolfo Anibal Baiano, Mattia Antonio Bellardini, Flavio Pino, Diego Alejandro Coria, Ludmila M. Gutiérrez, Mateo |
Fecha de publicación: | 2019 |
Es parte de: | XXXIII Jornadas Argentinas de Paleontología de Vertebrados |
Resumen: | New dicraeosaurid remains collected at the Pilmatué locality (Mulichinco Formation) comprise three articulated mid- tomid-posterior dorsal centra, and a complete right scapulo-coracoid. The centra are heavily eroded and transversely crashed.No pleurocoels are present, whereas in the most distal centrum a shallow lateral depression is present. The natural fracturesshow that the centra are massive internally, like the dorsal vertebrae of Pilmatueia faundezi Coria, Windholz, Ortega,Currie, 2019, and other dicraeosaurids. In contrast, the dorsal centra of non-dicraeosaurid diplodocoids and basal macronariansare pierced by foraminae, which communicate with the inside of the centra. In the scapula, the dorsal part of the posteriormargin of the acromion process is slightly convex, and the distal end of the scapular blade is somewhat expanded,like other flagellicaudatans. The acromial process is placed proximally, above the glenoid position, like in Dicraeosaurushansemanni Janensch, 1929; Amargasaurus cazaui Salgado and Bonaparte, 1991 and Suuwassea emilieae Harris and Dodson,2004; and unlike non-dicraeosaurid diplodocoids where the acromial process is located nearly at the midpoint of scapularbody. In the element described here, the angle between the acromion process and the coracoid is less than 90°, like inAmargasaurus cazaui. Preliminarily, these new materials are referred to Pilmatueia faundezi (come from the same site andgeological formation) expanding the anatomical knowledge of this species. |
URI: | https://www.peapaleontologica.org.ar/index.php/peapa/article/view/307/379 http://rid.unrn.edu.ar/handle/20.500.12049/5792 |
Aparece en las colecciones: | Objetos de conferencia |
Archivos en este ítem:
Archivo | Descripción | Tamaño | Formato | |
---|---|---|---|---|
2019 Windholz et al., 2019.pdf | 33,75 kB | Adobe PDF | Visualizar/Abrir |
Este documento es resultado del financiamiento otorgado por el Estado Nacional, por lo tanto queda sujeto al cumplimiento de la Ley N° 26.899
Este ítem está sujeto a una licencia Creative Commons Licencia Creative Commons