IANIGLA   20881
INSTITUTO ARGENTINO DE NIVOLOGIA, GLACIOLOGIA Y CIENCIAS AMBIENTALES
Unidad Ejecutora - UE
artículos
Título:
Malarguesaurus florenciae gen. et sp. nov., a new titanosauriform (Dinosauria, Sauropoda) from the Late Cretaceous of Mendoza, Neuquén Basin, Argentina
Autor/es:
GONZÁLEZ RIGA, BERNARDO J.; PREVITERA, ELENA; PIRRONE, CECILIA
Revista:
CRETACEOUS RESEARCH (PRINT)
Editorial:
ELSEVIER
Referencias:
Año: 2009 p. 135 - 135
ISSN:
0195-6671
Resumen:
Malarguesaurus florenciae gen. et sp. nov. is a new and robust somphospondylian   titanosauriform (Dinosauria, Sauropoda) from the Neuquén Basin, Mendoza Province, Argentina. The specimen comes from Upper Cretaceous strata assigned to the Portezuelo Formation (late Turonian-early Coniacian). It includes proximal, middle and distal caudal vertebrae, chevrons, dorsal ribs, and appendicular bones. Malarguesaurus is characterized by the following association of characters: (1) proximal caudal neural spines vertically directed, with a concave caudal border, and a caudodorsal corner forming a right angle; (2) procoelous-opisthoplatyan proximal and middle caudal vertebrae associated with procoelous distal caudal centra; and (3) distal caudal neural spines having a concave and depressed dorsal border. A preliminar cladistic analysis placed (Ligabuesaurus + (Malarguesaurus + Phuwiangosaurus)) as a sister taxon of Titanosauria. Unique among the titanosauriforms, Malarguesaurus has procoelous distal caudal centra associated with procoelous-opisthoplatyan proximal caudals. This discovery is a new evidence of the morphologic diversity of the South American sauropods.  
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