AverostraAvetheropodaCoelurosauriaDinosauriaDromaeosauridaeEusaurischiaLate CretaceousManiraptoraManiraptoriformesMicroraptoriaNeotheropodaNorth AmericaOrionidesParavesPennaraptoraSaurischiaTetanuraeTheropodaTyrannoraptora

Hesperonychus elizabethae

Dinosaur: Hesperonychus elizabethae

Cretaceous: 83.6–72.1 Ma
Type: Theropod

Length*:1.25 m4.1 ft
Weight*:3.6 kg8 lb
ESR: 1 / 4 (estimated size reliability)
*The largest known specimen



Sources

Material: Pubes and ilia, referred a number of isolated pedal phalanges.
References: Longrich, N.R. & Currie, P.J. (2009) "A microraptorine (Dinosauria-Dromaeosauridae) from the Late Cretaceous of North America".

Locations

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