Paleontology: a cock's comb on a duck-billed dinosaur.
A soft tissue structure has been discovered on the head of the duck-billed dinosaur Edmontosaurus. Its similarity to a cock's comb and other sexually dimorphic structures of birds suggests that potential sexual signals existed in these extinct animals.
Museum of the Rockies, Montana State University, Bozeman, MT 59717, USA. Electronic address: jhorner@montana.edu.
John R
JR
Horner
D000818:Animals; D025061:Dinosaurs / Q000033:anatomy & histology*