ARGENTINA

PATAGONIA

SOUTHWESTERN SANTA CRUZ PROVINCE

NEAR THE TOWN OF TRES LAGOS AND THE "PARADOR LA LEONA" (LB SECTION)

EAST OF LAKE VIEDMA

ESTANCIA LA BLANCA

MATA AMARILLA FORMATION

CENOMANIAN STAGE

UPPERMIDDLE GALLIC SUBEPOCH

LOWERMOST GULF EPOCH

MIDDLE CRETACEOUS-SANTONIAN STAGE

SENONIAN SUBEPOCH

LOWER GULF EPOCH

LATE CRETACEOUS

STEM: TETRAPODA GOODRICH, 1930

SUPERCLASS: AMNIOTA HAECKEL, 1866

CLASS: REPTILIA LAURENTI, 1768

SUBCLASS: DIAPSIDA OSBORN, 1904

INFRACLASS: EURYAPSIDA COLBERT, 1945

SUPERORDER: SAUROPTERYGIA OWEN 1860

GRANDORDER: EOSAUROPTERYGIA emend RIEPPEL, 1994

ORDER: PLESIOSAURIA OWEN, 1840 NON BLAINVILLE, 1835

Incertae sedis

Gen. sp indet (Level 1, 2)

SUBORDER: PLESIOSAURIA OWEN, 1840 NON BLAINVILLE, 1835

INFRAORDER: PLESIOSAUROMORPHA NOVA

EUPLESIOSAURIA O’KEEFE, 2001

Superfamily: ELASMOSAUROIDEA Cope, 1869

Family: ELASMOSAURIDAE Cope, 1869

Incertae sedis

Gen. sp. indet. (Level 2)

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ARGENTINA

PATAGONIA

SOUTHWESTERN SANTA CRUZ PROVINCE

TYPE LOCALITY OF MATA AMARILLA FORMATION

MATA AMARILLA FORMATION

CENOMANIAN STAGE

UPPERMIDDLE GALLIC SUBEPOCH

LOWERMOST GULF EPOCH

MIDDLE CRETACEOUS-SANTONIAN STAGE

SENONIAN SUBEPOCH

LOWER GULF EPOCH

LATE CRETACEOUS

STEM: TETRAPODA GOODRICH, 1930

SUPERCLASS: AMNIOTA HAECKEL, 1866

CLASS: REPTILIA LAURENTI, 1768

SUBCLASS: DIAPSIDA OSBORN, 1904

INFRACLASS: EURYAPSIDA COLBERT, 1945

SUPERORDER: SAUROPTERYGIA OWEN 1860

GRANDORDER: EOSAUROPTERYGIA emend RIEPPEL, 1994

ORDER: PLESIOSAURIA OWEN, 1840 NON BLAINVILLE, 1835

Incertae sedis

Gen. sp indet

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