Seymour Island, Klb 9 (Cretaceous of Antarctica)

Also known as Mortuneria seymourensis locality

Where: Antarctica (64.3° S, 56.7° W: paleocoordinates 62.6° S, 67.3° W)

• coordinate stated in text

When: López de Bertodano Formation, Late/Upper Maastrichtian (70.6 - 66.0 Ma)

• Seymour (Marambio) Island,Antarctica. Higher, ‘molluscan’ units (Klb 9) of the López

•de Bertodano Formation, upper Maastrichtian (Olivero, 2012).

Environment/lithology: marine; poorly lithified, concretionary, sandy siltstone and lithified carbonate

• part of nearshore marine and coastal-deltaic series within transgressive-regressive cycle
• loosely consolidated sandy siltstones intercalated with calcareous concretions and that is all it says

Size class: macrofossils

• Morturneria seymourensis (holotype), TTU P 9219, partial skull including, atlas/axis complex and mid cervical vertebrae.

Preservation: concretion

Collection methods: quarrying, chemical, mechanical,

• TTU P , Museum of Texas Tech University, Texas, USA;

Primary reference: S. Chatterjee and B. J. Small. 1989. New plesiosaurs from the Upper Cretaceous of Antarctica. Origin and Evolution of the Antarctic Biota, Geological Society Special Publication 47:197-215 [R. O'Keefe/R. O'Keefe/F. Aspromonte]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 13106: authorized by Robin O'Keefe, entered by Robin O'Keefe on 21.01.2002, edited by Matthew Carrano, Mark Uhen, Franco Aspromonte, Roger Benson and Philip Mannion

Creative Commons license: CC BY (attribution)

Taxonomic list

Reptilia
 Squamata - Mosasauridae
Mosasauridae indet. Gervais 1852 mosasaur
Aves
 Anseriformes - Vegaviidae
Vegaviidae indet.1 Agnolín et al. 2017 waterfowl
Reptilia
 Plesiosauria - Elasmosauridae
Elasmosauridae indet.2 Cope 1869 elasmosaur
Aristonectes sp.3 Cabrera 1941 elasmosaur
TTU.P.9219 (holotype skull and cervical vertebrae)
Actinopteri
 Teleostei -
Chondrichthyes
 Elasmobranchii -
Elasmobranchii indet. Bonaparte 1838 elasmobranch
unclassified
  -
Annelida indet. Lamarck 1809