WESTERN ANTARCTICA

SEYMOUR ISLAND (ISLAND MARAMBIO)

LOPEZ DE BERTODON FORMATION

UNIT KLB9

LATE MAASTRICHTIAN STAGE

UPPER SENONIAN SUBEPOCH

UPPER GULF EPOCH

LATEST CRETACEOUS

VETEROVATA

SUPERORDER: LACERTILIA OWEN, 1842

OORDER: SAURIA MACARTENEY, 1802 (SENSU RIEPPEL & DEBRAGA, 1996)

oofamily: Incerate sedis

*Antarcticoolithus bradayi

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WESTERN ANTARCTICA

SEYMOUR ISLAND (ISLAND MARAMBIO)

LOPEZ DE BERTODON FORMATION

LATE MAASTRICHTIAN STAGE

UPPER SENONIAN SUBEPOCH

UPPER GULF EPOCH

LATEST 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

SUBORDER: PLESIOSAURIA OWEN, 1840 NON BLAINVILLE, 1835

INFRAORDER: PLESIOSAUROMORPHA NOVA

EUPLESIOSAURIA O’KEEFE, 2001

Superfamily: ELASMOSAUROIDEA nova

Family: ELASMOSAURIDAE Cope, 1869

WEDDELLONECTIA O’GORMAN, & CORIA, 2016

Gen. sp indet.

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WESTERN ANTARCTICA

SEYMOUR ISLAND (ISLAND MARAMBIO)

UPPER LEVELES OF THE LOPEZ DE BERTODON FORMATION

LATE MAASTRICHTIAN STAGE

UPPER SENONIAN SUBEPOCH

UPPER GULF EPOCH

LATEST 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

SUBORDER: PLESIOSAURIA OWEN, 1840 NON BLAINVILLE, 1835

INFRAORDER: PLESIOSAUROMORPHA NOVA

EUPLESIOSAURIA O’KEEFE, 2001

Superfamily: ELASMOSAUROIDEA Cope, 1869

Incertae sedis

Gen. sp. indet.

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GULF EPOCH

LATE CRETACEOUS

ANTARTICA

JAMES ROSS ARCHIPELAGO

ISLE MARAMBO (SEYMOUR ISLAND)

LOPEZ DE BERTODANO FORMATION

MAASTRICHTIAN STAGE

UPPER SENONIAN SUBEPOCH

UPPER 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.

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ANTARCTICA

MARAMBIO (SEYMOUR) ISLAND

LOCALITY: IAA 10/13

UNITE KLB 9

LOPEZ DE BERTODANO FORMATION

MAASTRICHTIAN STAGE

UPPER SENONIAN SUBEPOCH

UPPER GULF EPOCH

LATE CRETACEOUS 

STEM: TETRAPODA GOODRICH, 1930

SUPERCLASS: AMNIOTA HAECKEL, 1866

CLASS: AVES LINNAEUS, 1758

AVEBREVICAUDA PAUL, 2001

SUBCLASS: CARINATE MERREM, 1813

INFRACLASS: NEORNITHES GADOW, 1893

PARVCLASS: NEOGNATHAE PYCRAFT 1900

ORDER: GAVIIFORMES WETMORE & MILLER, 1926

Gen. sp indet.

Family: GAVIIDAE Allen, 1897

Polarornis sp

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ANTARTICA

ANTARCTIC PENINSULA

SEYMOUR ISLAND

JAMES ROSS ARCHIPELAGO

LOPEZ DE BERTODANO FROMATION

MAASTRICHTIAN STAGE

UPPER SENONIAN SUBEPOCH

UPPER 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

SUBORDER: PLESIOSAURIA OWEN, 1840 NON BLAINVILLE, 1835

INFRAORDER: PLESIOSAUROMORPHA NOVA

EUPLESIOSAURIA O’KEEFE, 2001

Superfamily: ELASMOSAUROIDEA nova

Family: ELASMOSAURIDAE Cope, 1869

WEDDELLONECTIA O’GORMAN, & CORIA, 2016

Subfamily: ARISTONECTINAE O'Keef & Street, 2009

Aristonectes sp

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ANTARCTICA

SEYMOUR ISLAND

CENTRAL ISLA MARAMBIO

UNIT KLB9

LOPEZ DE BERTODANO FORMATION

MAASTRICHTIAN STAGE

UPPER SENONIAN SUBEPOCH

UPPER GULF EPOCH

LATE CRETACEOUS

STEM: TETRAPODA GOODRICH, 1930

SUPERCLASS: AMNIOTA HAECKEL, 1866

CLASS: REPTILIA LAURENTI, 1768

SUBCLASS: DIAPSIDA OSBORN, 1904

INFRACLASS: NEODIAPSIDA BENTON, 1985

LEGION: LEPIDOSAUROMORPHA BENTON, 1983

SUBLEGION: LEPIDOSAURIA HAECKEL, 1866 (DUMERIL & BIBRON, 1839)

MAGNORDER: SQUAMATA, OPPEL, 1811

SUPERORDER: LACERTILIA OWEN, 1842

GRANDORDER: SCINCOGEKKONOMORPHA SUKHANOV, 1961

MICRORDER: SCINCOMORPHA CAMP, 1923

ORDER: ANGUIMORPHA FURBRINGER, 1900

SUBORDER: DIPLOGLOSSA COPE, 1864

INFRAORDER: THECAGLOSSA COPE, 1890

PARVORDER: MONSTERSAURIA NORELL & GAO, 1977

Superfamily: VARANOIDEA Gray, 1827 (sensu Camp, 1923)

Family: MOSASAURIDAE Gervais, 1853

Incertae sedis

Gen. sp indet.

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ANTARCTICA

SEYMOUR ISLAND

ISLA MARAMBIO

LOPEZ DE BERTODANO FORMATION

UNIT "KLB 9"

PACHYDISCUS ULTIMUS BIOZONE

MAASTRICHTIAN STAGE

UPPER SENONIAN SUBEPOCH

GULF EPOCH

LATEST 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

SUBORDER: PLESIOSAURIA OWEN, 1840 NON BLAINVILLE, 1835

INFRAORDER: PLESIOSAUROMORPHA NOVA

EUPLESIOSAURIA O’KEEFE, 2001

Superfamily: ELASMOSAUROIDEA nova

Family: ELASMOSAURIDAE Cope, 1869

Subfamily: ARISTONECTINAE O'Keef & Street, 2009

Aristonectes cf. parvidens

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ANTARCTICA

WEST ANTARCTICA

NORTHEAST PENINSULA

BELOW JAMES ROSS ISLAND

SEYMOUR ISLAND

LOPEZ DE BARTODANO FORMATION

MAASTRICHTIAN STAGE

UPPER SENONIAN SUBEPOCH

UPPER GULF EPOCH

LATE CRETACEOUS

STEM: TETRAPODA GOODRICH, 1930

SUPERCLASS: AMNIOTA HAECKEL, 1866

CLASS: AVES LINNAEUS, 1758

AVEBREVICAUDA PAUL, 2001

SUBCLASS: CARINATE MERREM, 1813

INFRACLASS: NEORNITHES GADOW, 1893

PARVCLASS: NEOGNATHAE PYCRAFT 1900

GALLOANSERES SIBLEY & AHLQUIST, 1990

ORDER: VEGAVIIFORMES WORTHY, DEGRANGE, HANDLEY & LEE, 2018

Family: VEGAVIIDAE Agnolin, Egil, Chatterjee, Garcia Marsa & Novas, 2017

*Polarornis gregorii

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ANTARCTICA

WEST ANTARCTICA

NORTHEAST PENINSULA

BELOW JAMES ROSS ISLAND

SEYMOUR ISLAND

LOPEZ DE BERTODANO FORMATION

MARAMBIO GROUP

UPPER CAMPANIAN-MAASTRICHTIAN STAGE

UPPER SENONIAN SUBEPOCH

UPPER GULF EPOCH

LATE CRETACEOUS

STEM: TETRAPODA GOODRICH, 1930

SUPERCLASS: AMNIOTA HAECKEL, 1866

CLASS: REPTILIA LAURENTI, 1768

SUBCLASS: DIAPSIDA OSBORN, 1903

SUPERLEGION: NEODIAPSIDA BENTON, 1985

LEGION: ARCHOSAUROMORPHA HUENE, 1946

SUBLEGION: DINOSAUROMORPHA BENTON & NORMAN IN BENTON, 1985

INFRALEGION: DINOSAURIFORMES NOVAS, 1992

SUPERCOHORT: DINOSAURIA OWEN, 1842

COHORT: ORNITHISCHIFORMES COOPER, 1985

MAGNORDER: ORNITHISCHIA SEELEY, 1888

SUPERORDER: NEORNITHISCHIA COOPER, 1985

GRANDORDER: ORNITHOPODA MARSH, 1871

MICRORDER: EUORNITHOPODA SERENO, 1986

ORDER: IGUANODONTIA DOLLO, 1888

SUBORDER: ANKYLOPOLLEXIA SERENO, 1986

INFRAORDER: STYRACOSTERNA SERENO, 1986

PARVORDER: HADROSAURIFORMES SERENO, 1997

SUPERFAMILY: HADROSAUROIDEA COPE, 1869 (SENSU SERENO, 1986)

Family: HADROSAURIDAE COPE, 1869

Incertae sedis

Gen. sp indet.

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