crestless การใช้

Females are similar but smaller, duller, and crestless.
Also, Salvadori's pheasant occurs at higher altitudes in Sumatra than the crestless fireback.
""'Barbosania " "'is an extinct genus of crestless ornithocheirid pterosaur from the Cretaceous Romualdo Member of the Santana Formation of Northeastern Brazil, dating to the Albian-Albian stage.
Wiliams, Barrett, and Purnell conducted their study using the jaws of an " Edmontosaurus ", a crestless hadrosaurid that lived between 68 and 66 million years ago in what is now the United States and Canada.
Several recent phylogenetic studies have shown that " Oviraptor " is the most primitive known oviraptorid, thus making " Citipati " a closer relative of the " ingeniines " and this traditional division into crestless and crested forms artificial.