AverostraAvetheropodaCoelurosauriaDinosauriaDromaeosauridaeEusaurischiaLate CretaceousManiraptoraManiraptoriformesMicroraptoriaNeotheropodaNorth AmericaOrionidesParavesPennaraptoraSaurischiaTetanuraeTheropodaTyrannoraptora

Hesperonychus elizabethae

Dinosaur: Hesperonychus elizabethae

Type: Theropod

Length*: 1.25 m 4.1 ft
Weight*: 3.6 kg 8 lb
*The largest known specimen

ESR: 1 / 4 (estimated size reliability)


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".


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