Dinosaur Park

Fossil specimen of Ornithomimus sp. (TMP 1995.110.1), Royal Tyrrell Museum. This specimen was recovered from the middle Dinosaur Park Formation of Alberta, Canada.

Dinosaur Park Formation in Dinosaur Provincial Park, Alberta

Fossil hunting at Dinosaur Park

Skeletal reconstructions of Dinosaur Park Formation caenagnathids. Skeletal reconstructions of Citipes elegans (left), Chirostenotes pergracilis (middle), and Caenagnathus collinsi (right), showing variation in skeletal representation and body size. Previously referred material is indicated in white and newly referred material is indicated in red for each taxon. Blue asterisks indicate elements that have been histologically sampled for each taxon. Citipes elegans: dentaries, metatarsal IV; Chirostenotes pergracilis: dentaries, tibia; Caenagnathus collinsi: pubis.

Tarsometatarsi of caenagnathids from the Upper Campanian Dinosaur Park Formation, Dinosaur Provincial Park, Alberta, Canada. A. TMP 1993.036.0181 (Chirostenotes pergracilis). B. TMP 1982.016.0006 (Citipes elegans). C. ROM 781 (Citipes elegans holotype). D. TMP 1996.012.0141 (Citipes elegans). Tarsometatarsi in proximal (A1–D1), anterior (A2–D2), and posterior (A3–D3) views.

Pelvis (fused ilia and pubes) of UALVP 48778, holotype of Hesperonychus elizabethae, from the late Campanian Dinosaur Park Formation of Alberta, Canada. Fossil collected by Dr. Elizabeth Nicholls. Prepared by Clive Coy. Digital photography by Nick Longrich. Additional digital editing by Nick Longrich.

Skeletal reconstructions of Dinosaur Park Formation caenagnathids. Skeletal reconstructions of Citipes elegans (left), Chirostenotes pergracilis (middle), and Caenagnathus collinsi (right), showing variation in skeletal representation and body size. Previously referred material is indicated in white and newly referred material is indicated in red for each taxon. Blue asterisks indicate elements that have been histologically sampled for each taxon. Citipes elegans: dentaries, metatarsal IV; Chirostenotes pergracilis: dentaries, tibia; Caenagnathus collinsi: pubis.