Genus
Valid Extinct

Secernosaurus

Brett-Surman 1979
Etymology Du Latin ''secerno'', signifiant ''coupé de'' ou ''séparé de'' et ''saurus'', lézard (une allusion au fait que cet hadrosaure sud-américain vécut à l’écart des autres espèces auxquelles il est apparenté, lesquelles vécurent plusieurs milliers de kilomètres plus au nord en Amérique du Nord).

Secernosaurus is a genus of herbivorous hadrosaurid dinosaur that lived during the Late Cretaceous of what is now Argentina. This genus and its close relatives lived in South America, unlike most hadrosaurids, which lived in the Laurasian continents of Eurasia and North America. It has been suggested that the ancestors of Secernosaurus crossed into South America when a land bridge temporarily formed between North and South America during the Late Cretaceous and allowed biotic interchange between the two continents.

Temporal range
Triassic
Jurassic
Cretaceous
Paleogene
Neogene
252 201 145 66 0 Ma
PBDB occurrences
1
Group
Dinosaures
Herbivore Ground dwelling, gregarious Terrestrial
Secernosaurus
click to enlarge
Life reconstruction of Secernosaurus koerneri © Connor Ashbridge · CC BY-SA 4.0 · Wikimedia
PBDB ↗ Wikipedia ↗
Classification
Dinosauria Unranked clade
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Ornithischia Unranked clade
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Neornithischia Unranked clade
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Pyrodontia Unranked clade
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Cerapoda Unranked clade
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Ornithopoda Suborder
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Iguanodontia Infraorder
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Euiguanodontia Unranked clade
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Dryomorpha Unranked clade
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Ankylopollexia Unranked clade
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Styracosterna Unranked clade
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Hadrosauriformes Unranked clade
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Hadrosauroidea Unranked clade
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Hadrosauridae Family
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Hadrosaurinae Subfamily
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Kritosaurini Tribe
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Secernosaurus Genus
Fossil sites 1 geolocated sites
Distribution
Top countries
🇦🇷 Argentina
1
Geological formations
Lago Colhué Huapi
1
Temporal distribution
Maastrichtian (72.2–66 Ma)
1
Species (1)
Secernosaurus koerneri 72 Ma
Images 1
Bibliography
Original description
M . K. Brett-Surman. 1979. Phylogeny and palaeobiogeography of hadrosaurian dinosaurs. Nature 277:560-562 DOI ↗
Bibliography (1)
M . K. Brett-Surman. 1979. Phylogeny and palaeobiogeography of hadrosaurian dinosaurs. Nature 277:560-562 DOI ↗