Worlds deepest living fishes survives under pressure
fishes survives under the largest pressure during millions of years. peixe das profundezas sobrevive sob a maior pressao do mar durante milhões de anos. Prehistoric fish are various groups of fishes that lived before recorded history. A few, such as the coelacanth still exist today and are considered living fossils. The first fish and the first vertebrates, were the ostracoderms, which appeared in the Cambrian Period, about 510 million years ago, and became extinct at the end of the Devonian, about 350 million years ago. Ostracoderms were jawless fishes found mainly in fresh water. They were covered with a bony armor or scales and were often less than 30 cm (1 ft) long. The ostracoderms are placed in the class Agnatha along with the living jawless fishes, the lampreys and hagfishes, which are believed to be descended from the ostracoderms. The first fish with jaws, the acanthodians, or spiny sharks, appeared in the late Silurian, about 410 million years ago, and became extinct before the end of the Permian, about 250 million years ago. Acanthodians were generally small sharklike fishes varying from toothless filter-feeders to toothed predators. They were once often classified as an order of the class Placodermi, another group of primitive fishes, but recent authorities tend to place the acanthodiaes or that both groups share a common ancestor. The placoderms, another group of jawed fishes, appeared at the beginning of the Devonian, about 395 million years ago, and became extinct at the end of the Devonian or the beginning of the Mississippian (Carboniferous), about 345 million years ago. Detailed anatomical studies of fossil remains by the Swedish scientist Erik Stensiö strongly suggest that the placoderms were closely related to sharks. Placoderms were typically small, flattened bottom-dwellers, however, many, particularly the arthrodires, were active midwater predators. Dunkleosteus was the largest and most famous of these. The upper jaw was firmly fused to the skull, but there was a hinge joint between the skull and the bony plating of the trunk region. This allowed the upper part of the head to be thrown back, and in arthrodires, this allowed them to take larger bites. The cartilaginous-skeleton sharks and rays, class Chondrichthyes, which appeared about 370 million years ago in the middle Devonian, are generally believed to be descended from the bony-skeleton placoderms. The cartilaginous skeletons are considered to be a later development. The modern bony fishes, class Osteichthyes, appeared in the late Silurian or early Devonian, about 395 million years ago. The early forms were freshwater fishes, for no fossil remains of modern bony fishes have been found in marine deposits older than Triassic time, about 230 million years ago. The Osteichthyes may have arisen from the acanthodians. A subclass of the Osteichthyes, the ray-finned fishes (subclass Actinopterygii), became and have remained the dominant group of fishes throughout the world. It was not the ray-finned fishes, however, that led to the evolution of the land vertebrates. The ancestors of the land vertebrates are found among another group of bony fishes called the Choanichthyes or Sarcopterygii. Choanate fishes are characterized by internal nostrils, fleshy fins called lobe fins, and cosmoid scales. The choanate fishes appeared in the late Silurian or early Devonian, more than 390 million years ago, and possibly arose from the acanthodians. The choanate fishes include a group known as the Crossopterygii, which has one living representative, the coelacanth (Latimeria). During the Devonian Period some crossopterygian fishes of the order (or suborder) Rhipidistia crawled out of the water to become the first tetrapods. The story of vertebrate evolution started in the seas of the Cambrian period, when jawless, toothless, soft-bodied fishlike creatures wriggled through the water, sucking up microscopic food particles. Only after tough, non-decaying bone was developed (initially as a scaly outer covering and later within the body) did fossils form and become preserved in the rocks. And only then could paleontologists take up the story with any certainty. The earliest traces of bony scales are found in rocks of the Late Cambrian period, and the first recognizable vertebrate fish has been found in Australian rocks of Early Ordovician age. So, the first chapter in the vertebrate evolution starts with the ancient Arandaspis, a fish about 6in/15cm long with no jaws, no teeth and no fins other than a tail. It did, however, have gills and a stiffening rod of cartilaginous material (the notochord) that served as a backbone. w1tv 10 minutes. http://w1tv.sites.uol.com.br
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*Cassandra Steen* - Stadt - English Translation + German Lyrics/More Info [Official Music Video HQ]
Comment and Rate :) Please subscribe^^ Official German Songtext: Es ist so viel soviel zu viel Überall Reklame Zuviel Brot und zuviel Spiel Das Glück hat keinen Namen Alle Straßen sind befahren In den Herzen kalte Bilder Keiner kann Gedanken lesen Das Klima wird milder Refrain: Ich bau ne Stadt für dich Aus Glas und Gold und Stein Und jede Straße die hinausführt Führt auch wieder rein Ich bau eine Stadt für dich - und für mich Keiner weiß mehr wie er aussieht - oder wie er heißt Alle sind hier auf der Flucht - die Tränen sind aus Eis Es muss doch auch anders gehen - so geht das nicht weiter Wo find ich Halt, wo find ich Schutz - der Himmel ist aus Blei hier Ich geb keine Antwort mehr - auf die falschen Fragen Die Zeit ist rasent schnell verspielt - und das Glück muss man jagen Refrain: 2x (beim 2. Adel) - Ich bau ne Stadt für dich - Yeah - führt auch wieder rein - und für mich C-Part: Cassandra: Eine Stadt in der es keine Angst gibt nur Vertrauen Adel: Wo wir die Mauern aus Gier und Verächtlichkeit abbauen Cassandra: Wo das Licht nicht erlischt Adel: Das Wasser hellt Cassandra: Und jedes Morgen grauen Adel: Und der Traum sich lohnt Cassandra: Und wo jeder Blick durch Zeit und Raum in unsere Herzen fließt Refrain: 2x I do not own any of these songs. They all belong to their rightful owners.
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Bonnie's Pilates Workout Routine - Belly
Bonnie's Pilates Workout Routine - Belly BONNIE HERSCHMILLER Your Canadian Sweetheart xoxo SUBSCIBE!!! JOIN the Offical LA Weight Loss GROUP!!! http://www.youtube.com/group/laweightloss http://www.myspace.com/bonnieherschmiller http://bonniemarieh.blogspot.com/ http://www.calgarysun.com/cgi-bin/publish.cgi?p=149820&x=articles&s=lifestyle EDMONTON - On her bad days, back when she tipped the ol' Toledo at 208 lb. Bonnie Herschmiller used to sit on the couch, eat chocolate and cry. NEW LOOK ... Bonnie Herschmiller before and after losing 94 lbs. — Brendon Dlouhy, Sun Media "I was disgusted with myself," says the Edmonton mom, who stands just under 5-ft.-4. "I like to feel pretty. I'm a girly girl. When you're fat, you don't feel girlish at all." The New Brunswick native says she was already about 30 lb. overweight when she got pregnant in mid-2003. She then packed on another 60 lb. while "eating for two," a strategy that landed her in hospital during her third trimester with severe high blood pressure. After the birth of son Brett in February 2004, Herschmiller set her mind to taking off her excess cellulite and lowering her blood pressure. But she discovered it was easier said than done. "It wasn't coming off at all," she says. "I was exercising and everything, but it just wasn't coming off." Desperate to reclaim her girlish figure, she signed up at an Edmonton LA Weight Loss Center. Through a meal plan designed specifically for her, Herschmiller, 27, began eating six small nutritious meals a day. She also bought a Pilates DVD and began doing the exercises for between 30 and 60 minutes a day. Suddenly, Herschmiller became the incredible shrinking woman, losing 8 lb. in Week 1 and around 3.5 lb. each subsequent week. After six months, she was 94 lb. lighter, at a trim 114. Word spread about her success story - all the way to the U.S.-based head honchos of LA Weight Loss Centers, who made her a company poster girl. "It's not just a diet, it's a way of life," she says. "I love life now. There's a happiness inside me." LA - IT WORKS!!!
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