What is a good website to distinguish if a animal is a invertebrate or a chordate?
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One website that I like is called Tree of Life\nhttp://tolweb.org/tree/phylogeny.html\n\nit is a realitively straight forward scheme that allows you to pick the picture of the goup and then to pick subdivisions below that to classify your organism down to the Class level.\n\nand many other resources can be found from:\nhttp://www.biology.ualberta.ca/courses.hp/zool250/links.htm\n\n\n\nTo distinguish a chordate it must have the following 4 traits embryologically:\n - a notocord\n - a dorsal hollow nerve cord\n - pharyngeal gill slits\n - post-anal tail\n\nTo be a vertebrate it must have:\n - spinal column or backbone\n\nWhere vertebrates are a subdivision of chordates.
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http://ceratium.ietc.wwu.edu/IWS/Images/Biota/Animalia/Mollusca/Bivalvia/Psammobiidae/Nuttallia/obscurata\nit's on this page
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http://www.flmnh.ufl.edu/natsci/herpetology/brittoncrocs/csl.html\n\nThis is a good one.
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National Geographic website. Excellent pictures. Also check out Google images search, using words such as "wild animal" or the type of animal you seek. How about ZooBooks? They have really good pictures also.
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http://www.palaeos.com/Vertebrates/Units/240Squamata/240.000.html
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http://www.animalpicturesarchive.com/
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http://www.biotopics.co.uk/life/7chars.html
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Kingdom: Animalia \nPhylum: Nematoda \n\nCheck out the link below and look to the right side of the page.
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IFu are very much intreasted in studying that spider then take a book of PHYLUM ARTHROPODA  in invertebrate classification \nand identify the feautures like spines legs
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What kind of information do you need? \nTry this site it seems to cover for amateur to professional.... .\n\nPaleozoic.org is the place where professionals, amateurs, and enthusiasts trade news, information, and fossils. We are home to The Paleolist — a free email-based fossil mailing list and discussion forum for paleontologists, fossil collectors, and commercial dealers
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What a cool project!  So to answer one of your questions, the crucial distinction among your phyla will be whether or not they're chordates -- which of course includes the vertebrates (but also some invertebrates such as sea squirts and certain worms).  \n\nSo your bipedal wolf (I'm assuming the missing d was a typo, but if "bipeal" is a word from your universe, please let me know) would be phylum chordata, class vertebrata, order mammalia, family canidae, genus canus, species lupus bipedalis (and I'm envisioning something like a cross between Lawrence Talbot and Speaker-to-Animals, without retractible claws).  But that's just off the top of my head.\n\nOne thing I've discussed with my ten-year-old son is the absence of hexapod vertebrates -- e.g. flying horses, winged dragons, etc.  If you were closer, I'd invite you over for coffee and an all-day discussion of where to classify them, and how they evolved.  Since all terrestrial vertebrates have essentially the same structure, it's clear they all shared a common ancestor which makes hexapodal vertebrates, sadly, impossible in our known universe -- so was there a hexapodal (imaginary) marine vertebrate who also scuttled across the floors of silent seas before crawling out of the surf and saying "Hey, the carcharodons can't get me here!  Kewl!"?  ...Which of course suggests all sorts of hexapodal marine vertebrates that shared the same skeletal architecture.  Ooooh, fun.\n\nAnd the final question... so zoology is the study of animals.  There's also cryptozoology, which I've described flippantly as "the study of imaginary animals."  But of course, it's more technically the study of animals that may or may not exist.  So what would we call your zoology, which is the study of animals you've intentionally invented?  Oh, of course, poeiazoology (-poeia, meaing to construct -- as in mythopoeia, the term Tolkien invented to describe the invention of mythologies.)\n\nAnd on that note, elen sila lumen omentielvo!
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The only living chordates that do not have backbones are the "protochordates", that is, the members of phyla Urochordata or Tunicata (sea squirts) and Cephalochordata (lancelets). These chordates have the primitive support structure, a dorsal notochord. \nAdult Tunicates lack notochords, except for the planktoninc and tiny Appendiculaceans.  Tunicate larvae (known as "tadpole larvae") _do_ have a notochord that supports their tails. \nThere are many genera and species of Tunicata; so if you do a Google Image search for either "Tunicata", "Urochordata" "sea squirt" or "salp" you'll get many good photographs.\nOn the other hand, the lancelets are much less diverse. Almost all are included in genus Branchiostoma, so if you look for "Branchiostoma" or "lancelet" you'll get what you're searching.
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Kingdom: Animalia (is an animal)\nPhylum: Chordata (has a notochord at some stage)\nSubphylum: Vertebrata (has a spinal column - backbone)\nClass: Mammalia (is a mammal: warm-blooded, suckles young with milk)
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These are the classes of Chordata : \n\nPhylum Chordata\n\n    * Subphylum Urochordata - Tunicates\n    * Subphylum Cephalochordata - Lancelets\n    * (unranked) Craniata (animals with skulls)\n          o Subphylum Vertebrata (Vertebrates - animals with backbones)\n                + Class Myxini or Hyperotreti (hagfish)\n                + Class Conodonta (Conodonts)\n                + Class Cephalaspidomorphi (Paleozoic jawless fish)\n                      # Hyperoartia (lampreys and kin)\n                + Class Pteraspidomorphi (other Paleozoic jawless fish)\n                + Infraphylum Gnathostomata (jawed vertebrates)\n                      # Class Placodermi (Paleozoic armoured forms)\n                      # Class Chondrichthyes (cartilaginous fish)\n                      # (unranked) Teleostomi (advanced fishes and their descendents)\n                            * Class Acanthodii (Paleozoic "spiny sharks")\n                            * Class Actinopterygii (ray-finned fish - Osteichthyes in part)\n                      # Class Sarcopterygii (lobe-finned fish - Osteichthyes in part))\n                            * Superclass Tetrapoda (four-legged vertebrates)\n                                  o Class Amphibia (amphibians)\n                                  o Series Amniota (amniotic egg)\n                                        + Class Synapsida (mammal-like reptiles)\n                                              # Class Mammalia (mammals)\n                                        + Class Sauropsida - (reptiles)\n                                              # Subclass Anapsida\n                                                    * Order Testudines (turtles)\n                                                    * Subclass Diapsida (most modern reptiles)\n                                                          o Superorder Lepidosauria (lizards, snakes, tuatara)\n                                                          o Division Archosauria ("ruling reptiles")\n                                                                + Order Crocodilia (crocodiles, alligators, caimans, gharials)\n                                                                + Superorder Dinosauria\n                                                                      # Class Aves (birds)
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94. Annelida\n95. Echinodermata\n96. Mollusca\n97. Arthropoda
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kingdom animalia consits of some phylums. they are\nporifera (sponge)\ncoelentrata (jellyfish)\nplatyhelmintes \nnemathelmintes \nanellida (earthworms, leech)\nmollusca (SHELLS, OYSTERS AND SQUIDS)\narthropoda (crabs, insect, centipide)\nechinodermata (spine skinned animal)\nchordata (animals that have bones)
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cephalochordates should be examined vis a vis Hemichordates and urochordates. According to older classification these are the the three sub phyla of the phylum chordata.\nThe salient features of cephalochordates is the notochord that extends up to the head region.In chordates the notochord gives rise to the vertebral column and hence it should not extend up to the head region as the first neck vertebra starts from the posterior part of the skull.\nOther important features of cephalochordates include the presence of circulatory system, excretory system formed by flame cells(protonephridia), presence of wheel organ, Hatschek' pits, ciliary mode of feeding, presence of atrial apertures, segmental musculature, presence of epipharyngeal groove and endostyle, ciliated pharynx. Ductless gonads.Two dorsal aortae.