AlvarezsauridaeAlvarezsauroideaAverostraAvetheropodaCoelurosauriaDinosauriaEusaurischiaLate CretaceousManiraptoraManiraptoriformesNeotheropodaOrionidesSaurischiaSouth AmericaTetanuraeTheropodaTyrannoraptora

Alvarezsaurus calvoi

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Dinosaur: Alvarezsaurus calvoi

Cretaceous: 86.3–83.6 Ma
Type: Theropod

Length*:1.05 m3.4 ft
Weight*:1.7 kg4 lb
ESR: 3 / 4 (estimated size reliability)
*The largest known specimen



Locations


Sources

Material: Partial skeleton.
References: Bonaparte, (1991). Los vertebrados fósiles de la Formación Rio Colorado, de la Ciudad de Neuquén y Cercanías, Cretácico Superior, Argentina.

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