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Agnathans are jawless fish. There are two primary marine types of the class Agnatha. They are Hagfish and Lampreys. Here is some information and pictures of them:; ... Hagfish are of the order, Myxiniform. They are related to the slimefish. They have the peculiar habit of tying themselves into knots in order to shed...
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www.cyhaus.com/marine/agnatha.htm
www.cyhaus.com/marine/agnatha.htm
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The lampreys are the most primitive of the true vertebrates, their skeletons being cartilaginous without any true bone, and their skulls hardly differentiated from the vertebral column which forms a simple notochordal sheath. They have no true jaws, no ribs, no shoulder or pelvic girdles, ... They are eel-like in appearance,
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www.gma.org/fogm/agnatha.htm
www.gma.org/fogm/agnatha.htm
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Page produced by Priyanka Tandon ... The Agnatha class is in the Chordata phylum. The two main types of fish in the Agnatha class are lamprey and hagfish. The word Agnatha comes from the Greek word, meaning "not" and gnathos meaning "jaw."
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www.fcps.edu/westspringfieldhs/academic/science/1projec...
www.fcps.edu/westspringfieldhs/academic/science/1project/zoo00/zoo00/zoopis/agnatha.shtml
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A quick course in Ichthyology presented by Odyssey Expeditions Tropical Marine Biology Voyages ... FISHES- class agnatha ... Fish of the class agnatha ("no jaw") are the most "primitive" of the fishes; they lack a jaw and a bony skeleton. The hagfish and the lamprey are the only living representatives of this once large class.
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www.marinebiology.org/fish.htm
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You are in: Museum of Natural History >> Hall of Taxonomy >> Kingdom: Animalia >> Phylum: Chordata >> Class: Agnatha ... The agnathans are the most primitive and ancient of the vertebrates, fossils having been found that are over 500 million years old.
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virtualology.com/halloftaxonomy/kingdomanimalia/Phylumc...
virtualology.com/halloftaxonomy/kingdomanimalia/Phylumchordata/classagnatha/
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Class Agnatha takes its name from the Greek word "gnathos," which means jaw, and "a," which is the prefix for "without." These jawless fishes date back 470 million years ago, and are thought to have been the first vertebrate animals to evolve.
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virtualology.com/halloftaxonomy/kingdomanimalia/Phylumc...
virtualology.com/halloftaxonomy/kingdomanimalia/Phylumchordata/classagnatha/agnatha.org/
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The marine lamprey represents the most primitive living vertebrate, despite the fact that in some respects it shows a high degree of specialization. Among the primitive features to be observed are ... The brain and skeleton are poorly developed and the notochord persists throughout life. ... Many of the specialized features,
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bio.rutgers.edu/~gb102/lab_3/403am-agnatha.html
bio.rutgers.edu/~gb102/lab_3/403am-agnatha.html
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30.5); 5. Vertebrate Characteristics; Fishes; 6. Class Agnatha; 7. Class Placodermi; 8. Class Chondrichthyes; 9. Class Osteichthyes; Tetrapods; 10. Class Amphibia; 11. Class Reptilia; 12. Class Aves; 13. Class Mammalia...
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project.bio.iastate.edu/articulation/isu/freshman/biol_...
project.bio.iastate.edu/articulation/isu/freshman/biol_201/Outlines/chp30.html
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