Marambionectes

O’Gorman et al. 2024

Marambionectes is an extinct genus of weddellonectian elasmosaurid plesiosaur from the Late Cretaceous López de Bertodano Formation of Antarctica. The genus contains a single species, M. molinai, known from a partial skeleton.

Temporal range

Triassic

Jurassic

Cretaceous

Paleogene

Neogene

252 201 145 66 0 Ma

PBDB occurrences

Group

Sauroptérygiens

Carnivore aquatic, depth=surface Marine

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This reconstruction of Marambionectes molinai, found from the Lopez de Bertodano Formation, is based off of other related elasmosaurs such as Aristonectes and Nakonanectes. © ShamuBlackfish · CC0 · Wikimedia

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Classification

Sauropterygia Suborder

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Plesiosauria Order

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Plesiosauroidea Superfamily

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Elasmosauridae Family

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Weddellonectia Unranked clade

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Marambionectes Genus

Fossil sites 1 geolocated sites

Distribution

Top countries

🇦🇶 Antarctica

Geological formations

López de Bertodano

Temporal distribution

Maastrichtian (72.2–66 Ma)

Species (1)

Marambionectes molinai 72 Ma

Images 1

Bibliography

Original description

J. P. O’Gorman, J. I. Canale, and P. Bona, D. E. Tineo, M. Reguero, M. Cárdenas. 2024. A new elasmosaurid (Plesiosauria: Sauropterygia) from the López de Bertodano Formation: new data on the evolution of the aristonectine morphology. Journal of Systematic Palaeontology 22(1):2312302 DOI ↗

Bibliography (1)