He described the distinguishing characteristics as a straight bill hooked at the tip , linear nostrils , a bare face , and fully webbed feet .
The genus Pelecanus was first formally described by Linnaeus in 1758 in the tenth edition of his Systema Naturae ' .
Linnaeus described the distinguishing characteristics as a straight bill hooked at the tip , linear nostrils , a bare face , and fully webbed feet .
The genus Pelecanus was first formally described by Linnaeus in 1758 in the tenth edition of his Systema Naturae ' .