ClipArt ETC
"Heterocercal tail of Acipenser. a, fulcra; b, osseous bucklers." — Encyclopedia Britannica, 1893

Acipenser

"Heterocercal tail of Acipenser. a, fulcra; b, osseous bucklers." — Encyclopedia Britannica, 1893

"Fore-limb of Acipenser." — Encyclopedia Britannica, 1893

Acipenser

"Fore-limb of Acipenser." — Encyclopedia Britannica, 1893

"Top and side views. The cartilaginous cranium shaded, is supposed to be seen through the unshded canial bones."-Whitney, 1902

Sturgeon Skull

"Top and side views. The cartilaginous cranium shaded, is supposed to be seen through the unshded canial…