Where: Río Negro, Argentina (39.8° S, 66.7° W: paleocoordinates 42.2° S, 54.7° W)
• coordinate stated in text
• small collection-level geographic resolution
When: Jagüel Formation (Malargüe Group), Late/Upper Maastrichtian (70.6 - 66.0 Ma)
• 1.5 m below the Cretaceous/Paleogene boundary
• bed-level stratigraphic resolution
Environment/lithology: marine; green mudstone
Size class: macrofossils
Collected by Hector Cabaza and Museo Municipal de Lamarque in 1998-2001
• MML, Museo Municipal de Lamarque, Rio Negro, Argentina
Primary reference: Z. Gasparini, L. Salgado, and S. Casadio. 2003. Maastrichtian plesiosaurs from northern Patagonia. Cretaceous Research 240:157-170 [P. Mannion/P. Mannion/P. Mannion]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 140997: authorized by Philip Mannion, entered by Philip Mannion on 20.03.2013, edited by Jonathan Tennant
Creative Commons license: CC BY (attribution)
Taxonomic list
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Elasmosauridae indet.2 Cope 1869 elasmosaur MML-PV 3 (right mandibular fragment, prefrontal, four incomplete cervical vertebrae (one anterior, one medial and two posterior), two incomplete dorsal, one sacral and four caudal vertebrae; right femur, ten phalanges of a single (?) paddle, one indeterminate tarsal, rib fragments, several gastroliths)
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"Mosasaurus aff. hoffmanni" = Mosasaurus hoffmannii1
"Mosasaurus aff. hoffmanni" = Mosasaurus hoffmannii1 Mantell 1829 mosasaur MML-PV1, Fragments of both dentaries, left partial premaxilla, anterior portion of both left and right maxillae, lateral fragment of the frontal, proximal portion of the humerus with the head and postglenoid process, anterior fragment of the left angular, metacarpal I, five fragmentary teeth, atlas intercentrum, and one trunk vertebra
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