What is a Cretoxyrhina classification?
Name: Cretoxyrhina (Cretaceous jaws). Phonetic: Creh-tox-ee-rye-nah. Named By: Louis Agassiz – 1843. Classification: Chordata, Chondrichthyes, Elasmobranchii, Selachimorpha, Lamniformes, Cretoxyrhinidae.
Why did the Cretoxyrhina go extinct?
Cretoxyrhina saw its peak in size by the Coniacian, but subsequently experienced a continuous decline until its extinction during the Campanian. One factor in this demise may have been increasing pressure from competition with predators that arose around the same time, most notably the giant mosasaur Tylosaurus.
When did Cretoxyrhina go extinct?
about 90 million years ago
Shimada concluded that Cretoxyrhina mantelli occupied a top predatory niche comparable to that of the modern White Shark (Carcharodon carcharias). Despite its fearsome size and armament, C. mantelli did not long survive, becoming extinct by about 90 million years ago.
What did Cretoxyrhina look like?
Cretoxyrhina’s were smooth, curved, and grew more than two inches (five centimeters) long. Bite marks and teeth embedded in the bones of its prey suggest Cretoxyrhina chomped with brutal force.
Who would win a megalodon or a Mosasaurus?
While a similar length, the Megalodon had a much more robust body and huge jaws built for devouring whales and other large marine mammals. A Mosasaurus would not have been able to get its jaws around the much thicker body of the Megalodon. It would just take one catastrophic bite for the Megalodon to end the battle.
Are sharks prehistoric animals?
Sharks are among Earth’s most ancient creatures. First evolving over 455 million years ago, sharks are far more ancient than the first dinosaurs, insects, mammals or even trees. We love these living fossils – here are our top 10 prehistoric shark ancestors: Scaleless shark.
What was bigger than megalodon?
The Blue Whale: Bigger Than Megalodon | HowStuffWorks.
Can the megalodon eat the Mosasaurus?
The megalodon decides to chomp down on the midsection of the long mosasaur body to immobilize it and tear it apart, but really any area of the body will do.
What killed the Mosasaurus?
During the last 20 million years of the Cretaceous period (Turonian–Maastrichtian ages), with the extinction of the ichthyosaurs and pliosaurs, mosasaurs became the dominant marine predators. They became extinct as a result of the K-Pg event at the end of the Cretaceous period, about 66 million years ago.
How big are the teeth of a Cretoxyrhina mantelli?
Vertebra from Cretoxyrhina mantelli. 95 mm – almost 4 inches in diameter. Sharks are made of cartilage, which does not fossilize well. Much of what is known about them comes from their abundant—and harder—teeth. Cretoxyrhina mantelli teeth often grew more than two inches (five centimeters) long.
How big was the Cretoxyrhina great white shark?
Measuring up to 8 meters (26 ft) in length and weighing up to 3,400 kilograms (3.3 long tons; 3.7 short tons), Cretoxyrhina was one of the largest sharks of its time. Having a similar appearance and build to the modern great white shark, it was an apex predator in its ecosystem and preyed on a large variety…
What kind of fish did the Cretoxyrhina eat?
There is also strong evidence for its predation of the bony fish Xiphactinus, a four to six meter long predator itself, and even the large turtles of the day were fair game for Cretoxyrhina. Cretoxyrhinaacquired the name ‘Ginsu Shark’ in reference to its teeth.
How old is Cretoxyrhina when it reaches sexual maturity?
Studies have successfully calculated its life history using vertebrae from some of the skeletons. Cretoxyrhina grew rapidly during early ages and reached sexual maturity at around four to five years of age. Its lifespan has been calculated to extend to nearly forty years.