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PaleoAeolos — Olds Sharks
Published: 2004-12-17 21:26:06 +0000 UTC; Views: 13131; Favourites: 172; Downloads: 349
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Description
Here we are represented the variety of sharks of ends of the Paleozoic and part of the Mesozoic: Top left, the strange Helicoprion (Edestoidea) from the Permic; Top left, the basal shark Xenacanthus (Xenacanthidae) from the Carboniferous; Middle left, the exotic male of Falcatus (Stethacanthidae) from the Carboniferous; Middle rigth, the funny Stethacanthus (Stethacanthidae) from the Carboniferous; below left, the horned Hybodus (Hybodontidae) from the Jurassic; and the fish-like shark Belantsea (Petalodontiformes) from the Carboniferous. Not to same scale.Related content
Comments: 18
Wow love the colours especially on the Belantsea, never heard of it before
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himph i only recognize the Hybodus, the Megladon, the Stethacanthus, and the Belantsea. I guess i need to study more.
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Traté de buscar el significado del nombre del Stethacanthus, pero nunca lo encontré, ¿de casualidad lo sabras?
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On what basis were the color-schemes for these sharks chosen? Some (like Belantsea) look very impractical for an aquatic habitat.
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I like it
check out artist Ray Troll he's amazing
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I love your depiction of Helicoprion, Falcatus and Stethacanthus, they are some of my favourite prehistoric sharks.
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Tengo una dudilla, y es que me acabo de fijar que a Hybodus y Xenacanthus sólo les has puesto 4 hendiduras branquiales, pero casi todos los tiburones vivos tienen 5 (los que no, tienen 6 o 7), asi que me preguntaba si en efecto se sabe que tuvieran 4 hendiduras o es una licencia personal
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Los tiburones extinctos son tan interesantes! Me fascinan mucho! Buen trabajo aqui, me gustan tus reconstrucciones de belantsea y xenacanthus, especialmente, pero helicoprion siempre me parece incorrecto, en todas las reconstrucciones que yo he visto. Es un animal extran~o, no? Con los dientes en un circulo 
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Gracias, definitivamente estos animales eran muy exoticos. Los edestoideos como Helicoprion, definitivamente desarrollaron un mecanismo de desarrollo dental diferente del de cualquier otro grupo, hasta ahora creo que es la mejor respuesta al dilema de como introducir eso en la boca del animal, aun que en un sensus stricto deberia ser algo diferente.
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Good work 
Boy, there were some weird creatures, back then! Could we have more of those, please? I think most people need a heavy dose of factual strangeness rapidly!
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Ok.... a small review on fossil sharks..... the sharks appear in the fossil registration makes but 440 millions years on the Silurian Period. These first fossils consist on teeth and dermal flakes that don't allow to imagine too well the aspect of these first sharks. Recently he was discovered a new specimen of the Devonic that conserves soft parts of the head, denominated Doliodus problematicus ([link] ). Nevertheless, it is during the Carboniferous one that the registration of sharks becomes but attractive, reason for which this period is known as "The Golden Age of the Sharks." From the carboniferous and until the extinction Permian-Triassic, the sharks are the dominant form of the seas and possibly those but you miss. Among those but big the Edestoides were whose denture like scissor was projected on the outside of its faces in grotesque forms (Helicoprion, Edestus). More small but not less exotic they are the Stethacanthidae, with strong sexual dimorfismos expressed in the presence or absence of jagged dorsal fins and and other decorations (Stethacanthus, Falcatus, Damocles) (sees more on [link] ). The Petalodontiformes with strikingly skate-like in structure and bulbous body form; they were possibly surprising predators of bottom (Belantsea, Fissodus, Janassa). The Xenacanthida is sharks of fresh water with lengthened bodies and an onlooker pricks with thorns cephalic. Finally the Hybodontidae possesses an aspect more modern but they possess one to two pairs of hooked cephalic spines (Hybodus, Acrodus). None of these groups has representatives at the present time, neither he liks with the modern sharks, which evolve during the Mesozoic. If you wants now more see [link]
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Thanks for the links and generic names
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Wow... if only, if only I could do something like this for my characters. I just have to "know" enough about their species, I guess...
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Dont worry... all can make it with he/she practices
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*grin* you're right, thanks.... ad I'm a she, hehe..
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Ah yes, sent me a book about prehistoric sharks, some are really weird animals.
Nice drawings.
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