Genus
Valid Extinct

Masiakasaurus

Sampson et al. 2001
Etymology Reptile Violent

Masiakasaurus is a genus of small predatory theropod dinosaurs from the Late Cretaceous of Madagascar. In Malagasy, masiaka means "vicious"; thus, the genus name means "vicious lizard". The type species, Masiakasaurus knopfleri, was named after the musician Mark Knopfler, whose music inspired the expedition crew. It was named in 2001 by Scott D. Sampson, Matthew Carrano, and Catherine A. Forster. Unlike most theropods, the front teeth of Masiakasaurus projected forwards instead of straight down. This unique dentition suggests that they had a specialized diet, perhaps including fish and other small prey. Other bones of the skeleton indicate that Masiakasaurus were bipedal, with much shorter forelimbs than hindlimbs. It was a small theropod, reaching 1.8–2.1 m (5.9–6.9 ft) long and weighing 20 kg (44 lb). Masiakasaurus lived from 72.1 to 66 million years ago, along with animals such as Majungasaurus, Rapetosaurus, and Rahonavis. Masiakasaurus was a member of the group Noasauridae, small predatory ceratosaurs found primarily in South America.

Temporal range
Triassic
Jurassic
Cretaceous
Paleogene
Neogene
252 201 145 66 0 Ma
PBDB occurrences
29
Group
Dinosaures
Carnivore Ground dwelling, solitary Terrestrial
Masiakasaurus
click to enlarge
Masiakasaurus on display at the Royal Ontario Museum. © Eduard Solà · CC BY-SA 3.0 · Wikimedia
PBDB Wikipedia
Classification
Dinosauria Unranked clade
Theropoda Unranked clade
Neotheropoda Unranked clade
Averostra Unranked clade
Ceratosauria Suborder
Noasauridae Family
Noasaurinae Subfamily
Masiakasaurus Genus
Measurements
Length
4,6 m
Masiakasaurus knopfleri 
2 m
Mass
130 kg
Masiakasaurus knopfleri 
Fossil sites 29 geolocated sites
Distribution
Top countries
🇲🇬 Madagascar
29
Geological formations
Temporal distribution
Maastrichtian (72.2–66 Ma)
29
Species (1)
Masiakasaurus knopfleri 72 Ma
Images 3
Bibliography
Original description
S. D. Sampson, M. T. Carrano, and C. A. Forster. 2001. A bizarre predatory dinosaur from the Late Cretaceous of Madagascar. Nature 409:504-506 DOI ↗
Bibliography (5)
W. G. Joyce, Y. Rollot, and S. W. Evers, T. R. Lyson, L. J. Rahantarisoa, D. W. Krause. 2021. A new pelomedusoid turtle, Sahonachelys mailakavava, from the Late Cretaceous of Madagascar provides evidence for convergent evolution of specialized suction feeding among pleurodires. Royal Society Open Science 8(5):210098:1-32 DOI ↗
M. T. Carrano, M. A. Loewen, and J. J. W. Sertich. 2011. New materials of Masiakasaurus knopfleri Sampson, Carrano, and Forster, 2001, and implications for the morphology of the Noasauridae (Theropoda: Ceratosauria). Smithsonian Contributions to Paleobiology 95:1-53 DOI ↗
F. Fanti and F. Therrien. 2007. Theropod tooth assemblages from the Late Cretaceous Maevarano Formation and the possible presence of dromaeosaurids in Madagascar. Acta Palaeontologica Polonica 52(1):155-166
R. R. Rogers, D. W. Krause, and K. Curry Rogers, A. H. Rasoamiaramanana, L. Rahantarisoa. 2007. Paleoenvironment and paleoecology of Majungasaurus crenatissimus (Theropoda: Abelisauridae) from the Late Cretaceous of Madagascar. In S. D. Sampson & D. W. Krause (eds.), Majungasaurus crenatissimus (Theropoda: Abelisauridae) from the Late Cretaceous of Madagascar. Society of Vertebrate Paleontology Memoir 8. Journal of Vertebrate Paleontology 27(2, suppl.):21-31 DOI ↗
S. D. Sampson, M. T. Carrano, and C. A. Forster. 2001. A bizarre predatory dinosaur from the Late Cretaceous of Madagascar. Nature 409:504-506 DOI ↗