網頁Stethacanthus, colloquially known as the ironing board shark, was a small, primitive shark-like Holocephalian from the Devonian. It was unique for its flat dorsal fin which resembled an ironing board. Stethacanthus was a small, primitive shark-like Holocephalian. It looked similar to some of the shark species that would evolve later, like Hybodus, but unlike … 網頁JulioLacerda. It was a time when the oceans and rivers of the world were ruled by aliens with armored bodies and slicing bony blades in their mouths. Welcome to the Devonian, the Age of Fishes, when these creatures were at the height of their strangeness. Fish are the most numerous vertebrates on Earth today, outnumbering the others 10 to one.
Stethacanthus - YouTube
網頁Stethacanthus medía 70 centímetros de longitud y 25 de alto. Es más conocido por la inusual forma que presenta su aleta dorsal, que era propia de los machos. Se asemejaba a un yunque o a una tabla de planchar, y estaba recubierta de pequeñas espículas (versión ampliada de los dentículos dérmicos cutáneos que cubren la piel de los tiburones) que … 網頁Stethacanthus was an odd, dogfish-sized shark of the Carboniferous Period, about 320 million years ago. ... It was a veritable Golden Age of Sharks. Yet, as surely as the hangover follows the night of debauchery, … black orange motorcycle jacket
Stethacanthus Animal Database Fandom
網頁Stethacanthus Lo stetacanto (gen. Stethacanthus) è un pesce cartilagineo estinto, strettamente imparentato con gli squali. Visse tra la fine del Devoniano e l'inizio del Carbonifero (360-350 milioni di anni fa). I suoi resti sono stati rinvenuti in Scozia e in USA ... 胸脊鯊（學名：Stethacanthus），又名胸棘鯊或齒背鯊，是全頭亞綱 下的一滅絕屬。生存於泥盆紀晚期（382.7 百萬年前）至石炭纪晚期（298.9 百萬年前）。其化石發現于亞洲、歐洲及北美洲。現存與胸脊鯊親緣最近的物種為銀鮫 。 網頁1 天前 · Devonian Period (417 to 354 mya) Dunkleosteus Stethacanthus Hynerpeton Hyneria Carboniferous Period (354 to 290 mya) Meganeura Petrolacosaurus Arthropleura Proterogyrinus Permina Period (290 to 248 mya) Dimetrodon Seymouria Triassic ... garden sheds bothell