Genus
Valid Extinct

Marshosaurus

Madsen 1976
Etymology Reptile des marais

Marshosaurus is a genus of carnivorous theropod dinosaur, belonging to the family Piatnitzkysauridae, from the Late Jurassic Morrison Formation of Utah and possibly Colorado.

Temporal range
Triassic
Jurassic
Cretaceous
Paleogene
Neogene
252 201 145 66 0 Ma
PBDB occurrences
3
Group
Dinosaures
Carnivore Ground dwelling, solitary Terrestrial
Marshosaurus
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Wikimedia
PBDB ↗ Wikipedia ↗
Classification
Dinosauria Unranked clade
›
Theropoda Unranked clade
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Neotheropoda Unranked clade
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Averostra Unranked clade
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Tetanurae Unranked clade
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Megalosauroidea Superfamily
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Piatnitzkysauridae Family
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Marshosaurus Genus
Fossil sites 3 geolocated sites
Distribution
Top countries
🇺🇸 United States
3
Geological formations
Morrison
3
Temporal distribution
Tithonian (149.2–143.1 Ma)
3
Species (1)
Marshosaurus bicentesimus 155 Ma
Images 1
Bibliography
Original description
J. H. Madsen, Jr. 1976. A second new theropod dinosaur from the Late Jurassic of east central Utah. Utah Geology 3(1):51-60 DOI ↗
Bibliography (3)
D. J. Chure, B. B. Britt, and J. H. Madsen. 1997. A new specimen of Marshosaurus bicentesimus (Theropoda) from the Morrison Formation (Late Jurassic) of Dinosaur National Monument. Journal of Vertebrate Paleontology 17(3, suppl.):38A
W. E. Miller, J. L. Baer, and K. L. Stadtman, B. B. Britt. 1991. The Dry Mesa Dinosaur Quarry, Mesa County, Colorado. Guidebook for Dinosaur Quarries and Tracksites Tour, Western Colorado and Eastern Utah
J. H. Madsen, Jr. 1976. A second new theropod dinosaur from the Late Jurassic of east central Utah. Utah Geology 3(1):51-60 DOI ↗