An pagkakaiba han mga rebisyon han "Pating"

==Ebolusyon==

[[File:CretaceousSharkTeeth061812.JPG|right |thumb|A collection of [[Cretaceous]] [[shark teeth]]|alt=Photo of dozens of yellowish fossilized teeth, the teeth are of various sizes and are spread out randomly on a flat black surface.]]

 

An ebidensya na nabubuhi an pating nagtitikang pa sadton ''[[Ordovician]] period'', 450–420 milyon katuig an nakalabay, antes pa mabuhi an mga ''vertebrate'' sa tuna ngan antes manudok an mga tanaman sa mga konteninte.<ref name="RQGT"/> Only scales have been recovered from the first sharks and not all paleontologists agree that these are from true sharks, suspecting that these scales are actually those of [[thelodont]] agnathans.<ref name="RQES">{{cite web