. . "Chondrichthyan fish"@en . "North Asia"@en . . "Devonian to Carboniferous"@en . "?"@en . . . . "Stethacanthus, colloquially known as the ironing board shark, was a small, primitive shark from the Devonian. It was unique for its flat dorsal fin which resembled an ironing board."@en . . . "250"^^ . "Stethacanthus"@en . . . . . . . . . . . . . . . "black"@en . . . . . . . . "Stethacanthus es un g\u00E9nero extinto de peces cartilaginosos primitivos que vivieron en el Dev\u00F3nico Superior y en el Carbon\u00EDfero Inferior, hace unos 360 millones de a\u00F1os. Med\u00EDa casi un metro de longitud y es probable que se alimentara de otras especies de peces peque\u00F1os."@es . . . . . . . . . "Extinct"@en . . . . "Stethacanthus"@en . . . "Flat dorsal fin; primitive shark; several fins; draping lines of skin"@en . . "370"^^ . . . "EX"@en . "Stethacanthus"@es . "Walking with Monsters: Water Dwellers"@en . . . "Meat, fish"@en . . . "Europe"@en . "Hynerpeton; Bothriolepis; other animals"@en . "Stethacanthus in an extinct genus of sharks that lived around the late Devonian epoch to the early Carboniferous epoch."@en . . . "Stethacanthus es un g\u00E9nero extinto de peces cartilaginosos primitivos que vivieron en el Dev\u00F3nico Superior y en el Carbon\u00EDfero Inferior, hace unos 360 millones de a\u00F1os. Med\u00EDa casi un metro de longitud y es probable que se alimentara de otras especies de peces peque\u00F1os. Stethacanthus es m\u00E1s conocido por la inusual forma que presenta su aleta dorsal, que se asemeja a un yunque o a una tabla de planchar, y que estaba recubierta de peque\u00F1as esp\u00EDculas (versi\u00F3n ampliada de los dent\u00EDculos d\u00E9rmicos cut\u00E1neos que cubren la piel de los tiburones) que tambi\u00E9n cubr\u00EDan la cabeza. La cresta pudo haber tenido una funci\u00F3n en el cortejo, o tal vez habr\u00EDa sido utilizada para la defensa."@es . . . . . "Pelagic"@en . . . . . . . . . . . . . . . . . . . . . "Stethacanthus was around 70 centimeters (2.3 ft) long, and in many respects, hada typical shark-like appearance. However, it is best known for its unusually shaped dorsal fin, which resembled an anvil or ironing board. Small spikes (enlarged versions of the dermal denticles commonly covering shark skin) covered this crest, and the shark's head as well. Some scientists think the crest may have had a function in courtship; others think it may have been used for self defense."@en . "Stethacanthus, colloquially known as the ironing board shark, was a small, primitive shark from the Devonian. It was unique for its flat dorsal fin which resembled an ironing board."@en . . "Primitive shark"@en . . . . "Ironing Board shark"@en . . "hello my name is not jeff Known colloquially as \"The ironing-board shark\" due to the large- ironing-boards shaped fin on its back, Stethacanthus was an early shark that behaved much like modern reef sharks. It was alive 370-345 million years ago, and ranged from 70 centimetres to 2 metres in length. No-one knows what the ironing-board shaped fin was used for, though some speculate it may have been a way of attracting females, or scaring larger predators."@en . . . "Chest Spine"@en . . . "Stethacanthus was one of the first sharks to evolve. The sharks evolved in the Devonian, and have little changed since then. They became predators, but throughout the ages they were preyed upon by bigger fish (Dunkleosteus), marine reptiles (Liopleurodon) and whales (Basilosaurus). Eventually they became top predators and produced giants (Megalodon)."@en . . . . . . "Carnivore"@en . . "Stethacanthus in an extinct genus of sharks that lived around the late Devonian epoch to the early Carboniferous epoch."@en . . . . "North America and Scotland"@en . . . "Stethacanthus was one of the first sharks to evolve. The sharks evolved in the Devonian, and have little changed since then. They became predators, but throughout the ages they were preyed upon by bigger fish (Dunkleosteus), marine reptiles (Liopleurodon) and whales (Basilosaurus). Eventually they became top predators and produced giants (Megalodon). Stethacanthus was unique. Its dorsal fin was like an ironing board, as it was flat at the top with hundreds of tooth-shaped scales. Scientists cannot know for sure what this strange fine was used for, but it could have been for courting and mating, or making the shark look like it had another mouth. This method would have scared off predators."@en . . . . . "*S. altonensis\n*S. productus\n*S. praecursor\n*S. mirabilis\n*S. resistens\n*S. thomasi"@en . "Shark"@en . . . "Stethacanthus"@en . . "No"@en . . "Sea Monsters: Dangerous Seas"@en . . . . . . "A pair of Stethacanthus altonensis"@en . . . . "Stethacanthus was around 70 centimeters (2.3 ft) long, and in many respects, hada typical shark-like appearance. However, it is best known for its unusually shaped dorsal fin, which resembled an anvil or ironing board. Small spikes (enlarged versions of the dermal denticles commonly covering shark skin) covered this crest, and the shark's head as well. Some scientists think the crest may have had a function in courtship; others think it may have been used for self defense."@en . . "Xenacanthus"@en . . . . "Stethacanthus"@en . "hello my name is not jeff Known colloquially as \"The ironing-board shark\" due to the large- ironing-boards shaped fin on its back, Stethacanthus was an early shark that behaved much like modern reef sharks. It was alive 370-345 million years ago, and ranged from 70 centimetres to 2 metres in length. No-one knows what the ironing-board shaped fin was used for, though some speculate it may have been a way of attracting females, or scaring larger predators."@en . . .