But the most interesting new departure is the first appearance, in the Jurassic, of bony-framed fishes (Teleosts).
"The Story of Evolution" by Joseph McCabe
Our common teleost fish, like perch and cod, appeared much later.
"The Whence and the Whither of Man" by John Mason Tyler
In various Teleosts the scales are vestigial (eel); in others (as in most electric fishes) they have completely disappeared.
"Encyclopaedia Britannica, 11th Edition, Volume 14, Slice 3" by Various
In the sea, whales, sharks, and teleost fishes of modern types rule in the stead of huge swimming reptiles.
"The Elements of Geology" by William Harmon Norton