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The Phylum Chordata includes the well-known vertebrates (fishes, amphibians, reptiles, birds, mammals). The vertebrates and hagfishes together comprise the taxon Craniata. The remaining chordates are the tunicates (Urochordata), lancelets (Cephalochordata), and, possibly, some odd extinct groups.
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tolweb.org/tree?group=Chordata&contgroup=Deuterostomia
tolweb.org/tree?group=Chordata&contgroup=Deuterostomia
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The phylum Chordata is a very large group of animals which include the Subphylum Vertebrata (humans, dogs, cows, whales, ect.), Subphylum Cephalochordata (lancelets) and Subphylum Urochordata (sea squirts, tunicates and salps). ... In solitary ascidians, reproduction occurs sexually in two ways. One, the egg and sperm...
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www.nwmarinelife.com/html/chordata.html
www.nwmarinelife.com/html/chordata.html
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Reproduction in beings of the phylum Chordata is sexual, with the exception of urochordates that can also reproduce asexually. In some classes (cyclostomes, osteichthyes fishes and amphibians) there is larval stage.
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www.biology-questions-and-answers.com/chordates.html
www.biology-questions-and-answers.com/chordates.html
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The main taxa within Phylum Chordata include: ... Another theory suggests that vertebrates may have come from a larval form similar to tunicate larvae that were capable of reproduction in the larval stage, that is, they are sexually mature prior to metamorphosis, which is referred to as paedogenesis (paedo = child — same...
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biology.clc.uc.edu/courses/bio106/chordate.htm
biology.clc.uc.edu/courses/bio106/chordate.htm
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Tunicates are usually hermafroditic, but methods of reproduction are varied (some asexual through budding others sexual). The group name refers to the self-secreted tunic, or sacklike covering, over the body. Three classes are recognized, the best known being the sea squirts or ascidians (Ascidiacea).
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library.thinkquest.org/26153/marine/chordata.htm
library.thinkquest.org/26153/marine/chordata.htm
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Phylum chordata is composed of about 3-4,000 invertebrates and about 50,000 members of another successful group, the subphylum vertebrata. ... Sexual reproduction with males and females and internal fertilization is the rule...
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comenius.susqu.edu/bi/322/IZLecture38.htm
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Phylum Chordata; (Click on picture for more info) ... Overview. More on the chordates is here. A Chordate review PDF is here Another way is here ... Segmentation and Vertebrate Origins. Be sure to go forward through the entire article.
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cas.bellarmine.edu/tietjen/images/phylum_chordata_overv...
cas.bellarmine.edu/tietjen/images/phylum_chordata_overview.htm
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While the chordata share many developmental features, their life histories and ecology vary greatly. For instance, adult urochordates are typically sessile, while many vertebrates ... This water is filtered through a sac inside the bag-shaped body to procure food for the organism. Reproduction may be asexual through budding,
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www.ucmp.berkeley.edu/chordata/chordatalh.html
www.ucmp.berkeley.edu/chordata/chordatalh.html
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Home Kingdom Animalia Phylum Chordata ... Phylum Chordata chordates ... Phylum: Chordata...
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animaldiversity.ummz.umich.edu/site/accounts/informatio...
animaldiversity.ummz.umich.edu/site/accounts/information/Chordata.html
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