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Galagadon (/ ɡ æ l ʌ ɡ ə d ɒ n /) is an extinct genus of small carpet shark that lived during the Late Cretaceous period. It contains one species, G. nordquistae. It was named after the video game Galaga due to a resemblance between its teeth and the spaceships in the game, [1] and Field Museum volunteer Karen Nordquist.
The behemoth clocked in at a whopping 6 1/6 inches in length—roughly the size of a human hand!
The sharks were about 50 feet long, experts say.
The pieces are now reunited, creating a single 5.5-inch-long, 5.1-inch-wide tooth that came from one of the world’s most fearsome predators — a prehistoric shark that reached nearly 60 feet in ...
Based on allometric scaling of a great white shark, Shimada found that such individual would have weighed as much as 3,400 kilograms (3.3 long tons; 3.7 short tons). [ 34 ] A remeasurement conducted by Newbrey et al. (2013) found that C. mantelli and C. agassizensis reached sexual maturity at around four to five years of age and proposed a ...
Galeocerdo alabamensis is an extinct relative of the modern tiger shark. Nomenclature of this shark has been debated, and recent literature identified it more closely with the Physogaleus genus of prehistoric shark, rather than Galeocerdo. The classification of Physogaleus is known as tiger-like sharks while Galeocerdo refers to tiger sharks.
Aquilolamna is an extinct genus of shark-like elasmobranch from the Late Cretaceous ()-aged Agua Nueva Formation of Mexico.It is currently known to contain only one species, A. milarcae, also known as the eagle shark, and it is classified in its own family Aquilolamnidae, which has been tentatively assigned to the mackerel sharks.
The megalodon, which went extinct 2.6 million years ago, is estimated to have been between 52 and 59 feet long, which is nearly three times the size of an average great white shark.