Fish of the genera Lamna, Galeus, and carcharodon are common to New Jersey and the European cretaceous rocks.
"The Student's Elements of Geology"
Sir Charles Lyell
We know these monsters mostly by their teeth, for their skeletons were cartilaginous, and this absence of their remains is probably the reason why these creatures are passed by while the adjectives huge, immense, enormous are lavished on the Mosasaurs and Plesiosaurs-animals that the great-toothed shark, carcharodon megalodon, might well have eaten at a meal.
"Animals of the Past"
Frederic A. Lucas