English: Pellegrinisaurus powelli is a species of titanosaurian sauropod dinosaur from the late Upper Cretaceous of Argentina (Allen Formation). The type and only specimen of Pellegrinisaurus is MPCA 1500, which consists of four dorsal vertebrae, a partial femur, and 26 caudal vertebrae. Only one of the partial dorsals is figured, and it is not specified which one it is, so it has been omitted in this version.^[1]

A phylogenetic analysis conducted by Bandeira et. al., 2016, recovered Pellegrinisaurus as a basal member of the lineage of titanosaurs leading towards Saltasauridae.^[2] Another analysis run by Sallam et. al., 2018, recovered it as the most basal taxon in a clade consisting of it, Dreadnoughtus, Barutitan, and Alamosaurus.^[3] Currently, different studies often have quite different topolgies,^[4] so the position of Pellegrinisaurus may be elsewhere. The femur of Pellegrinisaurus is not illustrated in lateral view. Based on the shape of the known material, it most resembles that of Petrobrasaurus in shape.^[4] The lateral view was based on a combination of that of Petrobrasaurus^[5] and Dreadnoughtus, modified to match the femoral length of Pellegrinisaurus.^[6] The silhouette is based on Dreadnoughtus,^[6] with the neck reconstructed after Futalgonkosaurus^[7] and the skull is based on Tapuiasaurus.^[8]

References

1. ↑ Salgado, Leonardo (1996). "Pellegrinisaurus powelli nov. gen. et sp.(Sauropoda, Titanosauridae) from the Upper Cretaceous of lago Pellegrini, northwestern Patagonia, Argentina.". Ameghiniana 33 (4): 355-365. ISSN 0002-7014.
2. ↑ Bandeira, Kamila L. N.; Medeiros Simbras, Felipe; Batista Machado, Elaine; de Almeida Campos, Diogenes; Oliveira, Gustavo R.; Kellner, Alexander W. A. (2016). "A New Giant Titanosauria (Dinosauria: Sauropoda) from the Late Cretaceous Bauru Group, Brazil". PLoS ONE 11 (10): e0163373. DOI:10.1371/journal.pone.0163373.
3. ↑ Sallam, Hesham M.; Gorscak, Eric; O'Connor, Patrick M.; El-Dawoudi, Iman M.; El-Sayed, Sanaa; Saber, Sara; Kora, Mahmoud A.; Sertich, Joseph J. W.; Seiffer, Erik R.; Lamanna, Matthew C. (2018). "New Egyptian sauropod reveals Late Cretaceous dinosaur dispersal between Europe and Africa". Nature Ecology & Evolution 2: 445–451.
4. ↑ ^{a b} González Riga, Bernardo J.; Lamanna, Matthew C.; Otero, Alejandro; Ortiz David, Leonardo D.; Kellner, Alexander W. A.; Ibiricu, Lucio M. (2019). "An overview of the appendicular skeletal anatomy of South American titanosaurian sauropods, with definition of a newly recognized clade". Anais da Academia Brasileira de Ciências 91: e20180374.
5. ↑ Filippi, Leonardo S.; Canudo, José Ignacio; Salgado, Leonardo J.; Garrido, Alberto C.; Garcia, Rodolfo A.; Cerda, Ignacio A.; Otero, Alejandro (2011). "A new sauropod titanosaur from the Plottier Formation (Upper Cretaceous) of Patagonia (Argentina)". Geologica Acta 9 (1): 1–12. DOI:10.1344/105.000001648.
6. ↑ ^{a b} Lacovara, Kenneth J.; Lamanna, Matthew C.; Ibiricu, Lucio M.; Poole, Jason C.; Schroeter, Elena R.; Ullmann, Paul V.; Voegele, Kristyn K.; Boles, Zachary M.; Carter, Aja M.; Fowler, Emma K.; Egerton, Victoria M.; Moyer, Alison E.; Coughenour, Christopher L.; Schein, Jason P.; Harris, Jerald D.; Martínez, Rubén D.; Novas, Fernando E. (2014). "A Gigantic, Exceptionally Complete Titanosaurian Sauropod Dinosaur from Southern Patagonia, Argentina". Scientific Reports 4: 6196. Supplementary Material
7. ↑ Taylor, Michael P.; Wedel, Matt J. (2013). "Why sauropods had long necks; and why giraffes have short necks". PeerJ 1: e36. DOI:10.7717/peerj.36. PMID 23638372. PMC: 3628838.
8. ↑ Zaher, Hussam; Pol, Diego; Carvalho, Alberto B.; Nascimento, Paulo M.; Riccomini, Claudio; Larson, Peter; Juarez-Valieri, Rubén; Pires-Domingues, Ricardo; da Silva Jr., Nelson Jorge; de Almeida Campos, Diógenes (2011). "A Complete Skull of an Early Cretaceous Sauropod and the Evolution of Advanced Titanosaurians". PLoS ONE 6 (2): e16663. DOI:10.1371/journal.pone.0016663.