logging in or signing up evolution of fish Part 1 eskandari2000 Download Post to : URL : Related Presentations : Share Add to Flag Embed Email Send to Blogs and Networks Add to Channel Uploaded from authorPOINT lite Insert YouTube videos in PowerPont slides with aS Desktop Copy embed code: (To copy code, click on the text box) Embed: URL: Thumbnail: WordPress Embed Customize Embed The presentation is successfully added In Your Favorites. Views: 2336 Category: Science & Tech.. License: All Rights Reserved Like it (3) Dislike it (0) Added: November 04, 2008 This Presentation is Public Favorites: 4 Presentation Description fish evolution By Armin Eskandari Comments Posting comment... By: madhura481 (14 month(s) ago) Hi...can u pls let me download this...it is urgent...i need it for my assesment...pls..... Saving..... Post Reply Close Saving..... Edit Comment Close By: madhura481 (14 month(s) ago) Nice Saving..... Post Reply Close By: MarshEve (3 week(s) ago) Yeah, it was so cool to watch, the photos are amazing. my personal website http://flvtoaviconverter.org/ Saving..... Edit Comment Close By: jimpadin (15 month(s) ago) Hi armin, can I download your ppt presentation in preparation for my fish biology class? Saving..... Post Reply Close Saving..... Edit Comment Close By: eskandari2000 (23 month(s) ago) Hi you can download this PPT from download Botton of this post. if you cannt this please send me an emial . i will send to you this ppt. my Email adderss: eskandari2000@yahoo.com or a.eskandari@hacettepe .edu.tr or director@settg.com good Luck Saving..... Post Reply Close Saving..... Edit Comment Close By: kmpooja (23 month(s) ago) Hi..I am a pooja and a zoology student..can i please see the ppt Saving..... Post Reply Close By: eskandari2000 (23 month(s) ago) Hi you can download this PPT from download Botton of this post. if you cannt this please send me an emial . i will send to you this ppt. my Email adderss: eskandari2000@yahoo.com or a.eskandari@hacettepe .edu.tr or director@settg.com good Luck Saving..... Edit Comment Close loading.... See all Premium member Presentation Transcript Evolution of Fish : Evolution of Fish Armin Eskandari Age of Animals : Age of Animals -Nearly 4 billion years that life has existed on Earth. Evolution produced little beyond bacteria, plankton, and multi-celled algae. But beginning about 600 million years ago in the Precambrian, the fossil record speaks of more rapid change. First, there was the rise and fall of mysterious creatures of the "Vendian biota" or "Ediacara fauna“. Vendian Period, 600-540MYACambrian Period, 540-500 MYA (new timescale)Ordovician Period, 500-425 MYASilurian Period, 425-408 MYADevonian Period, 408-362 MYACarboniferous Period, 362-290 MYAPermian Period, 290-245 MYATriassic Period, 245-208 MYAJurassic Period, 208-145 MYACretaceous Period, 145-65 MYATertiary Period, 65-1.64 MYAQuaternary Period, 1.64 MYA - present Cambrian Period, 540-500 MYA (new timescale) : Cambrian Period, 540-500 MYA (new timescale) FA of exoskeletal material ,a laminated crust in arthropods. FA of many invertebrate phyla. (jawless fish, ostracoderm also known as Agnatha). Just like the molluscs and arthropods, the early fish had a armor. They had ate by sucking in mud through their mouths. They filtered out particles of food as the water left through their gills. Some jawless fish still survive today. (lampreys & hagfish). Origin of Fishes : Origin of Fishes Fish evolved from primitive Chordates Phylum Chordata Characteristics: 1-Dorsal, hollow nerve chord 2-Notochord: 2-1-Flexible dorsal rod support 2-1-Present at some stage in all chordates(usully in emberyonic development) 2-1-Present in adults of many fishes(Shark, Rays,Sturgeons) 3-Pharyngeal gill slits (p in emberyos of all Vertebraes) How did Fish evolved? : How did Fish evolved? Cephalochordata (Lancelets) Tunicate Earliest Accepted Chordate : Earliest Accepted Chordate Pikaia, Burgess Shale The history of the vertebrates may begin with Pikaia, a pre-vertebrate with a notochord, which places it in Phylum Chordata. See the notochord near the dorsal surface. The rib-like features are muscles. Middle Cambrian When did fish first Evolved? : When did fish first Evolved? Where did Fish Evolved? : Where did Fish Evolved? Generally belived to be in OCEAN because: 1-Habitat of other Chordates 2-Marine deposits contain most early Vertebrate Fossils Major groups of jawless fishes : Major groups of jawless fishes Ostracoderms (extinct) Agnathans Hagfishes (class Cephalaspidomorphi) Lamprey (class Myxini) Evolutionary relationships of vertebrates : Evolutionary relationships of vertebrates Evolution of Fish : Evolution of Fish Evolution of Fishes : Evolution of Fishes Geologic Ranges of Major Fish Groups : Geologic Ranges of Major Fish Groups Age of Fish : Age of Fish Many fish evolved during the Devonian Period including the abundant acanthodians placoderms ostracoderms other fish groups Evolutionary relationships : Evolutionary relationships Poor Fossil record Subject of much debite extinct groups:Conodonts(<2mm)(510M year-210 My) Ostrachoderms(460My) Abundent and Diverse, No Jaws and Paired Fins, Had Bony Armor Ostracoderms : Ostracoderms A. Pteraspis was about eight inches long. B. Hemicytaspis was about 5 inches long Myxiniformes:Hagfishes : Myxiniformes:Hagfishes jawless fishes,Not vertebrate,Lack bone and vertebrae, 40 Species, No fins or accessoies,Tendacles around mouth part Gnathostomata : Gnathostomata Gnathostomata(Jawed Vertebrates) Osteichthyes (Bony fishes) Chndrichthyes (Cartilaginus fishes) Placoderms Placoderms : Placoderms Earliest Jawed fish440-350 My ego.(extinct)Armored,internal skeleton,paired fins,No affinity for modern fishes Skull of Dunkleosteus, a Late Devonian placoderm. The skull is more than three feet long. Dunkleosteus, twenty-three feet long, pursuing a six-foot shark Cladoselache Diverse Placoderms : Diverse Placoderms Acanthodians : Acanthodians Climatius, an acanthodian about three Acanthodians : Acanthodians The fossil remains of the first jawed fish are found in Lower Silurian rocks and belong to the acanthodians, characterized by: large spines scales covering much of the body jaws teeth and reduced body armor Holocephalii(chimeridae, ratfishes) : Holocephalii(chimeridae, ratfishes) 30 Species,bottom dwelling,present since 400My Osteichthyes(Bony fishes) : Osteichthyes(Bony fishes) Osteichthyes(Bony fishes) Sarcopterygii(Lobe-finned fishes) Acthinopteriygii(Ray-finned fishes) Coelacanthiformes( (Coelacanths) Dipnoi(Lung fishes) bone,bony scales,Evolved in fresh water Slide 33: Bony Fishes Cheirolepsis, a primitive ray-finned fish of mid-Devonian age, about 22 inches long. Eusthenopteron, an Upper Devonian lobe-finned fish, about 20 inches long. Coelacanths : Coelacanths piscivore :a carnivorous animal which lives on eating fish. . : . Actinopteygii(Ray finned fishes) : Actinopteygii(Ray finned fishes) Actinopteygii Neopterygii(other modern bony fishes) Chondrostei(Sturgeons and paddlefishes) Neopterygii (modern Bony fishes) : Neopterygii (modern Bony fishes) Gnathostomes : Gnathostomes ... Gnathostomes : ... Gnathostomes Jaw fishes : Jaw fishes Slide 71: Male Teleost Evolution : Teleost Evolution Origin of Jaws : Origin of Jaws Primitive configuration of fish jaws and jaw supports shown in Carboniferous shark fossil. The Origin of Jaws : The Origin of Jaws Jaws developed from gill arches A second set of arches formed support for the jaws Same nerves and bloodvessels feed lamprey gillarches and shark jaws Jaws gave fish an enormous advantage and let to a huge adaptive radiation in Devonian Evolution of Jaws : Evolution of Jaws Cartilaginous Fish : Class Chrondrichthyes, represented today by sharks, rays, and skates, first evolved during the Middle Devonian -they are important members of the marine vertebrate fauna Cartilaginous Fish Bony Fish : Because bony fish are the most varied and numerous of all the fishes and because the amphibians evolved from them, their evolutionary history is particularly important There are two groups of bony fish the common ray-finned fish and the less familiar lobe-fined fish Bony Fish Ray-Finned and Lobe-Finned Fish : Arrangement of fin bones for (a) a ray-finned fish (b) a lobe-finned fish muscles extend into the fin allowing greater flexibility Ray-Finned and Lobe-Finned Fish Ray-Finned Fish Rapidly Diversified : From a modest freshwater beginning during the Devonian, ray-finned fish, which include most of the familiar fish such as trout, bass, perch, salmon, and tuna rapidly diversified to dominate the Mesozoic and Cenozoic Seas Ray-Finned Fish Rapidly Diversified Amphibians Evolved from Crossopterygians : The crossopterygians are an important group of lobe-finned fish because amphibians evolved from them During the Devonian, two separate branches of crossopterygians evolved one led to the amphibians while the other invaded the sea Amphibians Evolved from Crossopterygians Coelacanths : The crossopterygians that invaded the sea called the coelacanths were thought to have become extinct at the end of the Cretaceous In 1938, however, a fisherman caught a coelacanth off Madagascar since then several dozen more have been caught both there and in Indonesia Coelacanths Slide 83: Diverse in shape and size during the Devonian Fin structure most resembles tetrapod limbs The crossopterygians that became amphibians were the Rhipidistians. : Eusthenopteron, a member of the rhipidistian crossopterygians had an elongate body and paired fins that it could use to move about on land The crossopterygians are thought to be amphibian ancestors The crossopterygians that became amphibians were the Rhipidistians. Fish/Amphibian Comparison : Similarities between the crossopterygian lobe-finned fish and the labyrinthodont amphibians Fish/Amphibian Comparison Their skeletons were similar Transition from Water to Land : In passing from water to land, plants and animals had to solve the same basic problem the method of reproduction was the major barrier to expansion into the various environments required evolution of the seed in plants and the amniote egg in animals Transition from Water to Land You do not have the permission to view this presentation. In order to view it, please contact the author of the presentation.
evolution of fish Part 1 eskandari2000 Download Post to : URL : Related Presentations : Share Add to Flag Embed Email Send to Blogs and Networks Add to Channel Uploaded from authorPOINT lite Insert YouTube videos in PowerPont slides with aS Desktop Copy embed code: (To copy code, click on the text box) Embed: URL: Thumbnail: WordPress Embed Customize Embed The presentation is successfully added In Your Favorites. Views: 2336 Category: Science & Tech.. License: All Rights Reserved Like it (3) Dislike it (0) Added: November 04, 2008 This Presentation is Public Favorites: 4 Presentation Description fish evolution By Armin Eskandari Comments Posting comment... By: madhura481 (14 month(s) ago) Hi...can u pls let me download this...it is urgent...i need it for my assesment...pls..... Saving..... Post Reply Close Saving..... Edit Comment Close By: madhura481 (14 month(s) ago) Nice Saving..... Post Reply Close By: MarshEve (3 week(s) ago) Yeah, it was so cool to watch, the photos are amazing. my personal website http://flvtoaviconverter.org/ Saving..... Edit Comment Close By: jimpadin (15 month(s) ago) Hi armin, can I download your ppt presentation in preparation for my fish biology class? Saving..... Post Reply Close Saving..... Edit Comment Close By: eskandari2000 (23 month(s) ago) Hi you can download this PPT from download Botton of this post. if you cannt this please send me an emial . i will send to you this ppt. my Email adderss: eskandari2000@yahoo.com or a.eskandari@hacettepe .edu.tr or director@settg.com good Luck Saving..... Post Reply Close Saving..... Edit Comment Close By: kmpooja (23 month(s) ago) Hi..I am a pooja and a zoology student..can i please see the ppt Saving..... Post Reply Close By: eskandari2000 (23 month(s) ago) Hi you can download this PPT from download Botton of this post. if you cannt this please send me an emial . i will send to you this ppt. my Email adderss: eskandari2000@yahoo.com or a.eskandari@hacettepe .edu.tr or director@settg.com good Luck Saving..... Edit Comment Close loading.... See all Premium member Presentation Transcript Evolution of Fish : Evolution of Fish Armin Eskandari Age of Animals : Age of Animals -Nearly 4 billion years that life has existed on Earth. Evolution produced little beyond bacteria, plankton, and multi-celled algae. But beginning about 600 million years ago in the Precambrian, the fossil record speaks of more rapid change. First, there was the rise and fall of mysterious creatures of the "Vendian biota" or "Ediacara fauna“. Vendian Period, 600-540MYACambrian Period, 540-500 MYA (new timescale)Ordovician Period, 500-425 MYASilurian Period, 425-408 MYADevonian Period, 408-362 MYACarboniferous Period, 362-290 MYAPermian Period, 290-245 MYATriassic Period, 245-208 MYAJurassic Period, 208-145 MYACretaceous Period, 145-65 MYATertiary Period, 65-1.64 MYAQuaternary Period, 1.64 MYA - present Cambrian Period, 540-500 MYA (new timescale) : Cambrian Period, 540-500 MYA (new timescale) FA of exoskeletal material ,a laminated crust in arthropods. FA of many invertebrate phyla. (jawless fish, ostracoderm also known as Agnatha). Just like the molluscs and arthropods, the early fish had a armor. They had ate by sucking in mud through their mouths. They filtered out particles of food as the water left through their gills. Some jawless fish still survive today. (lampreys & hagfish). Origin of Fishes : Origin of Fishes Fish evolved from primitive Chordates Phylum Chordata Characteristics: 1-Dorsal, hollow nerve chord 2-Notochord: 2-1-Flexible dorsal rod support 2-1-Present at some stage in all chordates(usully in emberyonic development) 2-1-Present in adults of many fishes(Shark, Rays,Sturgeons) 3-Pharyngeal gill slits (p in emberyos of all Vertebraes) How did Fish evolved? : How did Fish evolved? Cephalochordata (Lancelets) Tunicate Earliest Accepted Chordate : Earliest Accepted Chordate Pikaia, Burgess Shale The history of the vertebrates may begin with Pikaia, a pre-vertebrate with a notochord, which places it in Phylum Chordata. See the notochord near the dorsal surface. The rib-like features are muscles. Middle Cambrian When did fish first Evolved? : When did fish first Evolved? Where did Fish Evolved? : Where did Fish Evolved? Generally belived to be in OCEAN because: 1-Habitat of other Chordates 2-Marine deposits contain most early Vertebrate Fossils Major groups of jawless fishes : Major groups of jawless fishes Ostracoderms (extinct) Agnathans Hagfishes (class Cephalaspidomorphi) Lamprey (class Myxini) Evolutionary relationships of vertebrates : Evolutionary relationships of vertebrates Evolution of Fish : Evolution of Fish Evolution of Fishes : Evolution of Fishes Geologic Ranges of Major Fish Groups : Geologic Ranges of Major Fish Groups Age of Fish : Age of Fish Many fish evolved during the Devonian Period including the abundant acanthodians placoderms ostracoderms other fish groups Evolutionary relationships : Evolutionary relationships Poor Fossil record Subject of much debite extinct groups:Conodonts(<2mm)(510M year-210 My) Ostrachoderms(460My) Abundent and Diverse, No Jaws and Paired Fins, Had Bony Armor Ostracoderms : Ostracoderms A. Pteraspis was about eight inches long. B. Hemicytaspis was about 5 inches long Myxiniformes:Hagfishes : Myxiniformes:Hagfishes jawless fishes,Not vertebrate,Lack bone and vertebrae, 40 Species, No fins or accessoies,Tendacles around mouth part Gnathostomata : Gnathostomata Gnathostomata(Jawed Vertebrates) Osteichthyes (Bony fishes) Chndrichthyes (Cartilaginus fishes) Placoderms Placoderms : Placoderms Earliest Jawed fish440-350 My ego.(extinct)Armored,internal skeleton,paired fins,No affinity for modern fishes Skull of Dunkleosteus, a Late Devonian placoderm. The skull is more than three feet long. Dunkleosteus, twenty-three feet long, pursuing a six-foot shark Cladoselache Diverse Placoderms : Diverse Placoderms Acanthodians : Acanthodians Climatius, an acanthodian about three Acanthodians : Acanthodians The fossil remains of the first jawed fish are found in Lower Silurian rocks and belong to the acanthodians, characterized by: large spines scales covering much of the body jaws teeth and reduced body armor Holocephalii(chimeridae, ratfishes) : Holocephalii(chimeridae, ratfishes) 30 Species,bottom dwelling,present since 400My Osteichthyes(Bony fishes) : Osteichthyes(Bony fishes) Osteichthyes(Bony fishes) Sarcopterygii(Lobe-finned fishes) Acthinopteriygii(Ray-finned fishes) Coelacanthiformes( (Coelacanths) Dipnoi(Lung fishes) bone,bony scales,Evolved in fresh water Slide 33: Bony Fishes Cheirolepsis, a primitive ray-finned fish of mid-Devonian age, about 22 inches long. Eusthenopteron, an Upper Devonian lobe-finned fish, about 20 inches long. Coelacanths : Coelacanths piscivore :a carnivorous animal which lives on eating fish. . : . Actinopteygii(Ray finned fishes) : Actinopteygii(Ray finned fishes) Actinopteygii Neopterygii(other modern bony fishes) Chondrostei(Sturgeons and paddlefishes) Neopterygii (modern Bony fishes) : Neopterygii (modern Bony fishes) Gnathostomes : Gnathostomes ... Gnathostomes : ... Gnathostomes Jaw fishes : Jaw fishes Slide 71: Male Teleost Evolution : Teleost Evolution Origin of Jaws : Origin of Jaws Primitive configuration of fish jaws and jaw supports shown in Carboniferous shark fossil. The Origin of Jaws : The Origin of Jaws Jaws developed from gill arches A second set of arches formed support for the jaws Same nerves and bloodvessels feed lamprey gillarches and shark jaws Jaws gave fish an enormous advantage and let to a huge adaptive radiation in Devonian Evolution of Jaws : Evolution of Jaws Cartilaginous Fish : Class Chrondrichthyes, represented today by sharks, rays, and skates, first evolved during the Middle Devonian -they are important members of the marine vertebrate fauna Cartilaginous Fish Bony Fish : Because bony fish are the most varied and numerous of all the fishes and because the amphibians evolved from them, their evolutionary history is particularly important There are two groups of bony fish the common ray-finned fish and the less familiar lobe-fined fish Bony Fish Ray-Finned and Lobe-Finned Fish : Arrangement of fin bones for (a) a ray-finned fish (b) a lobe-finned fish muscles extend into the fin allowing greater flexibility Ray-Finned and Lobe-Finned Fish Ray-Finned Fish Rapidly Diversified : From a modest freshwater beginning during the Devonian, ray-finned fish, which include most of the familiar fish such as trout, bass, perch, salmon, and tuna rapidly diversified to dominate the Mesozoic and Cenozoic Seas Ray-Finned Fish Rapidly Diversified Amphibians Evolved from Crossopterygians : The crossopterygians are an important group of lobe-finned fish because amphibians evolved from them During the Devonian, two separate branches of crossopterygians evolved one led to the amphibians while the other invaded the sea Amphibians Evolved from Crossopterygians Coelacanths : The crossopterygians that invaded the sea called the coelacanths were thought to have become extinct at the end of the Cretaceous In 1938, however, a fisherman caught a coelacanth off Madagascar since then several dozen more have been caught both there and in Indonesia Coelacanths Slide 83: Diverse in shape and size during the Devonian Fin structure most resembles tetrapod limbs The crossopterygians that became amphibians were the Rhipidistians. : Eusthenopteron, a member of the rhipidistian crossopterygians had an elongate body and paired fins that it could use to move about on land The crossopterygians are thought to be amphibian ancestors The crossopterygians that became amphibians were the Rhipidistians. Fish/Amphibian Comparison : Similarities between the crossopterygian lobe-finned fish and the labyrinthodont amphibians Fish/Amphibian Comparison Their skeletons were similar Transition from Water to Land : In passing from water to land, plants and animals had to solve the same basic problem the method of reproduction was the major barrier to expansion into the various environments required evolution of the seed in plants and the amniote egg in animals Transition from Water to Land