Subfamily
Valid Extinct

Eustreptospondylinae

Paul 1988

Megalosauridae is a monophyletic family of carnivorous theropod dinosaurs within the group Megalosauroidea. Appearing in the Middle Jurassic, megalosaurids were among the first major radiation of large theropod dinosaurs. They were a relatively primitive group of basal tetanurans containing two main subfamilies, Megalosaurinae and Afrovenatorinae, along with the basal genus Eustreptospondylus, an unresolved taxon which differs from both subfamilies.

Temporal range
Triassic
Jurassic
Cretaceous
Paleogene
Neogene
252 201 145 66 0 Ma
PBDB occurrences
10
Group
Dinosaures
Carnivore Ground dwelling, solitary Terrestrial
Eustreptospondylinae
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Wikimedia
PBDB ↗ Wikipedia ↗
Classification
Dinosauria Unranked clade
›
Theropoda Unranked clade
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Neotheropoda Unranked clade
›
Averostra Unranked clade
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Tetanurae Unranked clade
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Megalosauroidea Superfamily
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Megalosauridae Family
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Eustreptospondylinae Subfamily
Fossil sites 10 geolocated sites
Distribution
Top countries
🇫🇷 France
5
🇳🇪 Niger
3
🇬🇧 United Kingdom
2
Geological formations
Marnes de Dives
3
Calcaires de Caen
2
Tiourarén
2
Irhazer II
1
Middle Inferior Oolite
1
Oxford Clay
1
Temporal distribution
Kimmeridgian (154.8–149.2 Ma)
2
Oxfordian (161.5–154.8 Ma)
1
Callovian (165.3–161.5 Ma)
3
Bathonian (168.2–165.3 Ma)
3
Bajocian (170.9–168.2 Ma)
1
Bibliography
Original description
G. S. Paul. 1988. Predatory Dinosaurs of the World. Simon & Schuster, New York
Bibliography (8)
A. Serrano-Martínez, D. Vidal, and L. Sciscio, F. Ortega, F. Knoll. 2016. Isolated theropod teeth from the Middle Jurassic of Niger and the early dental evolution of Spinosauridae. Acta Palaeontologica Polonica 61(2):403-415 DOI ↗
A. Serrano-Martínez , F. Ortega, and L. Sciscio, J. E. Tent-Manclús, I. F. Bandera, F. Knoll. 2015. New theropod remains from the Tiourarén Formation (?Middle Jurassic, Niger) and their bearing on the dental evolution in basal tetanurans. Proceedings of the Geologists’ Association 126:107-118 DOI ↗
M. T. Carrano, R. B. J. Benson, and S. D. Sampson. 2012. The phylogeny of Tetanurae (Dinosauria: Theropoda). Journal of Systematic Palaeontology 10(2):211-300 DOI ↗
R. Allain. 2002. Discovery of megalosaur (Dinosauria, Theropoda) in the Middle Bathonian of Normandy (France) and its implications for the phylogeny of basal Tetanurae. Journal of Vertebrate Paleontology 22(3):548-563 DOI ↗
P. C. Sereno, J. A. Wilson, and H. C. E. Larsson, D. B. Dutheil, H.-D. Sues. 1994. Early Cretaceous dinosaurs from the Sahara. Science 266(5183):267-271 DOI ↗
A. D. Walker. 1964. Triassic reptiles from the Elgin area: Ornithosuchus and the origin of carnosaurs. Philosophical Transactions of the Royal Society of London, Series B, Biological Sciences 248:53-134
F. v. Huene. 1923. Carnivorous Saurischia in Europe since the Triassic. Bulletin of the Geological Society of America 34:449-458
J. A. Eudes-Deslongchamps. 1837. Mémoire sur le Poekilopleuron bucklandi, Grande Saurien Fossile, Intermédiare entre les Crocodiles et les Lézards, Découvert dans les Carrières de la Maladrerie, près Caen, au Mois de Juillet 1835 [Memoir on the Poekilopleuron bucklandi, a Great Fossil Saurian, Intermediate between Crocodiles and Lizards, Discovered in the Maladrerie Quarries, near Caen, in July 1835].