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Hammerhead Taxonomy However, it was mentioned to me that this may have been changed recently and the family Sphyrnidae was reverted to a single genus Sphyrna with a subgenus Eusphyra within the family Carcharhinidae. Other than this unusual headgear, the hammerheads are very similar in overall form to the whaler sharks of the family Carcharhinidae (as established by Jordan and Evermann in 1896). Compagno (1979, 1988) noted that the hammerheads are morphologically most similar to the carcharhinid Scoliodon laticaudus (the spadenose shark) and hypothesised that the hammerhead sharks may share a relatively recent common ancestor with that genus. www.elasmo-research.org /education/topics/ng_hh_taxonomy.htm   (1898 words)

USF Ichthyology - Hammerhead Shark The bonnethead shark is being used as model for studying the role of androgens (male sex steroid hormones) in elasmobranchs. This is a small crab-eating member of the hammerhead family (Sphyrnidae). The bonnethead is an abundant inshore species that can be maintained in captivity with ease making it a relatively convenient animal for study. luna.cas.usf.edu /~motta/hammer.htm   (463 words)

Sphyrna mokarran Prima segnalazione mediterranea di Sphyrna mokarran (Rüppel, 1837) (Selachii, Sphyrnidae). Richardson, 1836) Família SPHYRNIDAE Gênero Sphyrna Sphyrna lewini (Griffith and Smith, 1834) Sphyrna media Springer, 1940 Sphyrna mokarran (Rüppell, 1837... Familia Sphyrnidae - Cornudas Sphyrna lewini (Griffith y Smith, 1834) - cornuda o martillo Sphyrna mokarran Rüppell, 1837) - cornuda o martillo Sphyrna tiburo... specieslist.com /endangered/scientific_name/S/Sphyrna_mokarran.shtml   (3083 words)

Florida Museum of Natural History Ichthyology Department   (Site not responding. Last check: 2007-10-08) Bonnetheads are the smallest species in the family Sphyrnidae. It is the smallest of the hammerhead-type (family Sphyrnidae) sharks, reaching an average of 3-4 feet in length in comparison to the scalloped hammerhead which grows to an average of 6 feet and the great hammerhead growing to almost 20 feet in length. Coloration of the bonnethead ranges from gray to gray-brown, occasionally with a green tint. www.flmnh.ufl.edu /fish/Gallery/Descript/Bonnethead/Bonnethead.html   (1641 words)

Lesson Plans - What's the Hammer For?   (Site not responding. Last check: 2007-10-08) Have students look at a list of the nine species of hammerheads that comprise the Family Sphyrnidae. Scientists have long wondered why this small group of ground sharks evolved to have their unusual hammer-shaped heads. Have students scroll down to Family Sphyrnidae and write answers to this question on their own paper: "According to this page, what might be one of the reasons for hammerheads' 'hammers'?" www.nationalgeographic.com /xpeditions/lessons/08/g912/hammerfor.html   (765 words)

Kyle Mara - USF Ichthyology My current research is focused on the feeding and head morphology of hammerhead sharks (Sphyrnidae). The relationship between form and function can be used to determine the biological role of a given feature. Mara, K.R. Influence of Head Shape on Superficial Sensory and Feeding Elements in Hammerhead Sharks (Sphyrnidae). luna.cas.usf.edu /~motta/Kyle.htm   (814 words)

Mallethead shark - Sphyrna corona FAMILY SPHYRNIDAE — HAMMERHEAD SHARKS Sphyrna corona (Springer, 1940) — Scalloped bonnethead Sphyrna lewini (Griffith and Smith, in Cuvier, Griffith and Smith... ...laticaudus Spadenose shark Triaenodon obesus Whitetip reef shark Sphyrnidae hammerhead sharks 9 Eusphyra blochii Winghead shark Sphyrna corona Mallethead shark... ...reef shark Carcharhiniformes Sphyrnidae Eusphyra Eusphyra blochii Winghead shark Carcharhiniformes Sphyrnidae Sphyrna Sphyrna corona Scalloped bonnethead... sharks.wildmadagascar.org /species/links/Sphyrna_corona.html   (139 words)

News | TimesDaily.com | TimesDaily | Florence, AL   (Site not responding. Last check: 2007-10-08) Hammerhead sharks of the genus Sphyrna are members of the family Sphyrnidae. The only other genus of Sphyrnidae, Eusphyra, contains only one species, Eusphyra blochii, the winghead shark. The nine known species of hammerhead range from 2 to 6 m long (6.5 to 19.5 feet), and all species have a projection on each side of the head that give it a resemblance to a flattened hammer. www.timesdaily.com /apps/pbcs.dll/section?category=NEWS&template=wiki&text=Hammerhead_Shark   (778 words)

The Social Lives of Hammerheads Hammerheads, especially when they form large groups, are very shy and it is usually difficult for scuba divers to get close to them. Hammerhead sharks form the family of Sphyrnidae, that includes eight species: the winghead shark (Eusphyra blochii), scalloped bonnethead (Sphyrna corona), scalloped hammerhead (S. lewini), scoophead shark (S. media), great hammerhead (S. mokarran), bonnethead shark (S. tiburo), golden hammerhead (S. tudes) and the smooth hammerhead (S. ygaena). In the hammerhead shark, the front part of the head is flattened dorsoventrally and laterally increased to form what we call the "cephalofoil," or two wide flattened expansions that constitute the characteristic shape of a hammer. www.worldandijournal.com /subscribers/feature_detail.asp?num=25044   (2214 words)

Sphyrnidae - Dictionnaire Français-Anglais WordReference.com We found no English translation for 'Sphyrnidae' in our French to English Dictionary. Or did you want to translate 'Sphyrnidae' from English to French? Forum discussions with the word(s) 'Sphyrnidae' in the title: www.wordreference.com /fren/Sphyrnidae   (41 words)

Animal Planet :: Shark! Beyond the Jaws Do hammerhead sharks have their heads shaped like a hammer for mating, or something else? A: No one is 100 percent certain why members of the Sphyrnidae family, of which there are 11 species, have a hammer-like shape. The unique flattened and laterally expanded hammer-shaped head may serve as a bow plane to increase their maneuvering capabilities while swimming. animal.discovery.com /convergence/safari/shark/expert/expert17.html   (179 words)

ADW: Sphyrnida...: Classification We could not find any information about the taxon Sphyrnida... This could be a name that is missing from our taxon database, or an older name that is no longer considered valid (Please see our If you are looking for a species, you can also search for the generic name (for example, the Myotis part of Myotis lucifugus) and look at the list of recognized species within that genus. animaldiversity.ummz.umich.edu /site/accounts/classification/Sphyrnida...   (145 words)

Zazizam.com : Education - Hammerhead Shark Combine your phone and internet, and save on your phone calls The hammerhead shark (genus Sphyrna) is a member of the family Sphyrnidae. The only other genus of Sphyrnidae, Eusphyra, contains only one species, E. www.zazizam.com /content/education/h/Hammerhead_shark.php   (564 words)

Glossary Searched Term   (Site not responding. Last check: 2007-10-08) Fishes of the Family Sphyrnidae, Order Carchariniformes (ground sharks). See FishBase for more information on this Family. Poissons de la famille des Sphyrnidae, ordre des Carchariniformes (requins moulus). www.fishbase.org /Glossary/Glossary.cfm?TermEnglish=requins-marteaux   (82 words)

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