[D] Barrosasaurus casamiquelai [sG] [T]
Describer
Salgado & Coria 2009
Time
Cretaceous Late Campanian
Classification
Saurischia Sauropodomorpha Sauropoda Titanosauria
Diet
Herbivore
Fossilsite
Anacleto Formation, Sierra Barrosa, Neuquén, Argentina
Info
Holotype
MCF-PVPH-447/1-3 three large and incomplete, although well-preserved, dorsal vertebrae (one probably the third, the next the seventh or eighth, and the last the ninth or tenth).
The arrangement of neural arch laminae in the dorsal vertebrae of this titanosaur differs from that present in other genera in the following ways: the spinoprezygapophyseal laminae are well developed in the third vertebra, and relictual in the seventh or eighth vertebra; two spinodiapophyseal laminae are present in the seventh or eighth and in the ninth or tenth vertebrae, the anterior spinodiapophyseal lamina being more strongly developed than the posterior spinodiapophyseal lamina in the ninth or tenth vertebra. hese characters, among others, allow the recognition of this individual as a new species of Titanosauria, which increases knowledge of the diversity of titanosaurs in the Late Cretaceous of Patagonia.
The Anacleto Formation currently comprises the species Laplatasaurus araukanicus Huene, 1929, Pellegrinisaurus powelli Salgado, 1996, and Neuquensaurus australis (Lydekker, 1893). This record also includes the beautifully preserved titanosaur embryos from the exceptional locality of Auca Mahuevo, in the north of Neuquén province (Chiappe et al. 1998, 2001). Although isolated and fragmentary material of titanosaurian sauropods is common in the Anacleto Formation, examples of associated and well-preserved remains belonging to a single individual are rare. In the locality of Sierra Barrosa the Neuquén Group, including the Portezuelo, Plottier, Bajo de la Carpa and Anacleto formations, crops out extensively. Abundant terrestrial vertebrates, including saurischian dinosaurs, crocodiles and turtles, have been recovered from multiple stratigraphic levels (Coria et al. 2000, 2001, 2004; Coria & Currie 2002). The remains of Barrosasaurus casamiquelai were collected from a single horizon, and were deeply embedded in reddish fluvial sandstones, positioned close to one another.
Salgado & Coria 2009
Time
Cretaceous Late Campanian
Classification
Saurischia Sauropodomorpha Sauropoda Titanosauria
Diet
Herbivore
Fossilsite
Anacleto Formation, Sierra Barrosa, Neuquén, Argentina
Info
Holotype
MCF-PVPH-447/1-3 three large and incomplete, although well-preserved, dorsal vertebrae (one probably the third, the next the seventh or eighth, and the last the ninth or tenth).
The arrangement of neural arch laminae in the dorsal vertebrae of this titanosaur differs from that present in other genera in the following ways: the spinoprezygapophyseal laminae are well developed in the third vertebra, and relictual in the seventh or eighth vertebra; two spinodiapophyseal laminae are present in the seventh or eighth and in the ninth or tenth vertebrae, the anterior spinodiapophyseal lamina being more strongly developed than the posterior spinodiapophyseal lamina in the ninth or tenth vertebra. hese characters, among others, allow the recognition of this individual as a new species of Titanosauria, which increases knowledge of the diversity of titanosaurs in the Late Cretaceous of Patagonia.
The Anacleto Formation currently comprises the species Laplatasaurus araukanicus Huene, 1929, Pellegrinisaurus powelli Salgado, 1996, and Neuquensaurus australis (Lydekker, 1893). This record also includes the beautifully preserved titanosaur embryos from the exceptional locality of Auca Mahuevo, in the north of Neuquén province (Chiappe et al. 1998, 2001). Although isolated and fragmentary material of titanosaurian sauropods is common in the Anacleto Formation, examples of associated and well-preserved remains belonging to a single individual are rare. In the locality of Sierra Barrosa the Neuquén Group, including the Portezuelo, Plottier, Bajo de la Carpa and Anacleto formations, crops out extensively. Abundant terrestrial vertebrates, including saurischian dinosaurs, crocodiles and turtles, have been recovered from multiple stratigraphic levels (Coria et al. 2000, 2001, 2004; Coria & Currie 2002). The remains of Barrosasaurus casamiquelai were collected from a single horizon, and were deeply embedded in reddish fluvial sandstones, positioned close to one another.