Fossilized stays present in Patagonia, Argentina again in 2009 constitute a brand new genus and species of plant-eating dinosaur that belonged to a gaggle known as Rebbachisauridae.
Campananeyen fragilissimus. Symbol credit score: Fundación Azara.
The newly-discovered dinosaur species lived in Patagonia between 99 to 96 million years in the past (Past due Cretaceous epoch).
Dubbed Campananeyen fragilissimus, the traditional plant-eater was once an early member of Rebbachisauridae, a gaggle of diplodocoid sauropods that varied essentially at the supercontinent Gondwana between the Early and Past due Cretaceous.
“Rebbachisauridae is recovered because the basal-most workforce of Diplodocoidea,” stated Dr. Lucas Lerzo, a paleontologist with the Fundación Azara – Universidad Maimónides and CONICET, and his colleagues.
“Despite the fact that the inferred starting place of diplodocoid sauropods is within the Past due Decrease to Early Heart Jurassic, it isn’t till the Decrease Cretaceous that rebbachisaurid sauropods seem within the fossil report, with a top of variety on the finish of the historical past of the circle of relatives within the Early Higher Cretaceous.”
“Rebbachisauridae is characterised by way of a extremely pneumatized skeleton which deeply invades the axial skeleton and the pelvic girdle.”
“They provide novel options within the dorsal vertebrae no longer reported in some other sauropod.”
The postcranial stays of Campananeyen fragilissimus have been accumulated in 2009 from the Candeleros Formation in Barda Atravesada de Las Campanas, Neuquén Province, Argentina.
They have been discovered in conjunction with the fossils of small theropod and rebbachisaurid dinosaurs, a turtle and a lizard.
The group’s research presentations that Campananeyen fragilissimus is intently associated with Zapalasaurus, Sidersaura and a specimen from the Los angeles Amarga Formation.
“The brand new rebbachisaurid is recovered because the sister taxon of Sidersaura due the presence of procoelous posterior caudal vertebrae and dorsoventrally flattened posterior caudal centra,” the researchers stated.
“Campananeyen fragilissimus items an excessive pneumatization of the sacral area with an autapomorphic dorsal alar arm of the sacral transverse processes.”
“In any case, the phylogenetic research helps a South American starting place for Rebbachisauridae and an early diversification to Africa and Europe by way of the Barremian-Aptian as up to now advised.”
The invention of Campananeyen fragilissimus is reported in a paper within the magazine Historic Biology.
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Lucas N. Lerzo et al. All of them floated within the cretaceous: new rebbachisaurid (Sauropoda, Diplodocoidea) with a extremely pneumatized skeleton from the Higher Cretaceous (decrease Cenomanian) of Patagonia, Argentina. Historic Biology, revealed on-line August 13, 2024; doi: 10.1080/08912963.2024.2383708
