The great hammerhead was first described as Zygaena mokarran in 1837 by German naturalist Eduard Rüppell. The name was later changed to the current Sphyrna mokarran. For many years, though, the valid scientific name for the great hammerhead was thought to be Sphyrna tudes, which was coined in 1822 by Achille Valenciennes. In 1950, Enrico Tortonese determined that the specimens illustrated by Valenciennes were in fact smalleye hammerheads, to which the name S… WebThe scalloped hammerhead (Sphyrna lewini) is a species of hammerhead shark in the family Sphyrnidae.It was originally known as Zygaena lewini.The Greek word sphyrna translates into "hammer" in English, referring to the …

Shark Anatomy The Shark Trust

WebThe smooth hammerhead (Sphyrna zygaena) is listed by the IUCN on its Red List of Threatened Species as Vulnerable as its population worldwide may drastically decline unless efforts are put in place to secure its survival. Sphyrna zygaena is a large-bodied and highly mobile hammerhead shark with active and strong swimming capacities. The maximum … Since sharks do not have mineralized bones and rarely fossilize, only their teeth are commonly found as fossils. Their closest relatives are the requiem sharks (Carcharinidae). Based on DNA studies and fossils, the ancestor of the hammerheads probably lived in the Early Miocene epoch about 20 million years … See more The hammerhead sharks are a group of sharks that form the family Sphyrnidae, so named for the unusual and distinctive structure of their heads, which are flattened and laterally extended into a "hammer" shape … See more Reproduction occurs only once a year for hammerhead sharks, and usually occurs with the male shark biting the female shark violently until she agrees to mate with him. The … See more According to the International Shark Attack File, humans have been subjects of 17 documented, unprovoked attacks by hammerhead sharks within the genus Sphyrna since AD 1580. No human fatalities have been recorded. The great and the … See more The known species range from 0.9 to 6.0 m (2 ft 11 in to 19 ft 8 in) in length and weigh from 3 to 580 kg (6.6 to 1,300 lb). One specimen caught off the Florida coast in 1906 weighed over 680 kg (1,500 lb). They are usually light gray and have a greenish tint. Their bellies are … See more Hammerhead sharks eat a large range of prey such as fish (including other sharks), squid, octopus, and crustaceans. Stingrays are a particular … See more Humans are the number one threat to hammerhead sharks. Although they are not usually the primary target, hammerhead sharks are caught in fisheries all over the … See more Among Torres Strait Islanders, the hammerhead shark, known as the beizam, is a common family totem and often represented in … See more play from dvd player

Hammerhead Shark Fish Facts Sphyrnidae - AZ Animals

WebFeb 17, 2024 · hammerhead shark, (family Sphyrnidae), any of 10 shark species belonging to the genera Sphyrna (9 species) and Eusphyrna (1 species), which are characterized by a … WebSharks portal. Sphyrna (from the Greek word σφῦρα, "hammer") is a genus of hammerhead sharks with a cosmopolitan distribution in the world's oceans. Members of Sphyrna have … WebThe earliest fossil evidence for sharks or their ancestors are a few scales dating to 450 million years ago, during the Late Ordovician Period. Emma Bernard, a curator of fossil fish at the Museum, says, 'Shark-like scales from the Late Ordovician have been found, but no teeth. If these were from sharks it would suggest that the earliest forms ... primary universal tooth numbering system