| |
|
1925 |
Mechanics of crocodile vertebrae.
Bull. Geol. Soc. Amer. 36: 605-614. 6 figs. Dec. 30, 1925 (read Dec. 30, 1924).
–P. 613: {"Chevrons are found also in Cetaceans and Sirenians, where aquatic locomotion is brought about by the movement, upward and downward, of a horizontally flattened tail."}
|