How To Use Jawless In A Sentence
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This jawless mouth sets the lamprey and its cousin the hagfish apart from all other modern vertebrates - animals with backbones.
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The containing group of jawed vertebrates and jawless fishes is vertebrata.
A New Book
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The bony armor of the earliest jawless fish was dermal bone; so are shark scales, shoulder blades, and the roof of your skull.
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And while jawless vertebrates were present in the Cambrian, it was not until the Ordovician that armored fish became common enough to leave a rich fossil record.
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And while jawless vertebrates were present in the Cambrian, it was not until the Ordovician that armored fish became common enough to leave a rich fossil record.
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In going from amphioxus to jawless fish to jawed fish to land vertebrates we see an increase in complexity of the clotting cascade:
Behe's Test
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For example, the first gill arch in jawless fishes like lampreys (and in embryos of jawed vertebrates) corresponds to the jaws in those vertebrates that have them (that is, all modern vertebrates except lampreys and hagfishes).
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Modern vertebrates are classified into two major groups, the gnathostomes (jawed vertebrates) and the agnathans (jawless vertebrates).
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Sure, the jawless fish is doing quite well with out Factor V …. but look what it does have.
Behe's Test
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One is the jawless fish, the lampreys, an ancient group with just a few species in it.
Times, Sunday Times
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In short, this analysis finds that conodonts are more derived than any of the living jawless vertebrates.
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When the fossilized lamprey lived, there were probably many types of jawless vertebrates.
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The hagfish, together with lampreys, are living representatives of the jawless vertebrates (class Agnatha) and are considered to be the most evolutionarily ancient vertebrates.
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The hagfish, together with lampreys, are living representatives of the jawless vertebrates (class Agnatha) and are considered to be the most evolutionarily ancient vertebrates.
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Remains of ostraderms (jawless, armored fish) from Ordovician rocks comprise some of the oldest vertebrate fossils.
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For example, the first gill arch in jawless fishes like lampreys (and in embryos of jawed vertebrates) corresponds to the jaws in those vertebrates that have them (that is, all modern vertebrates except lampreys and hagfishes).
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So, showing that the jawless fish doesn't have Christmas Factor doesn't really do much to his claim.
Behe's Test
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Jawless fishes and placoderms were also affected, although many placoderm lineages survived quite happily until the end Devonian.
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Some 450 million years ago, both jawed and jawless vertebrates began relying on cells called lymphocytes to support the burgeoning adaptive immune system.
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Even sharks are closer cousins to humans than they are to lampreys and hagfish the only modern survivors of the once thriving and diverse group of jawless fishes but again, we call them all fish.
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[[ostracoderm]] s jawless fish related to present-day [[lamprey]] s and
Conservapedia - Recent changes [en]
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This jawless mouth sets the lamprey and its cousin the hagfish apart from all other modern vertebrates - animals with backbones.
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Neither of these jawless fish has a bony skeleton, but most of the fossil groups listed on the cladogram had a fairly extensive covering of bony plates.
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Biologists could examine the many living animals (such as lancelets and sea squirts) that represented stages in the transition from the invertebrates to the earliest jawless fishes.
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With their armored head shield and trunk shield composed of overlapping bony plates, the placoderms appear at first glance extremely similar to the ostracoderms (armoured jawless fish).
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By examining fossils and DNA, Shubin shows us that our hands actually resemble fish fins, our head is organized like that of a long-extinct jawless fish, and major parts of our genome look and function like those of worms and bacteria.
The Panda's Thumb: Resources for Biologists Archives
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With their armored head shield and trunk shield composed of overlapping bony plates, the placoderms appear at first glance extremely similar to the ostracoderms (armoured jawless fish).
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This section of the essay is devoted to an article in Nature magazine on the evolution of the immune system in lampreys (a jawless, parasitic fish).
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The bony armor of the earliest jawless fish was dermal bone; so are shark scales, shoulder blades, and the roof of your skull.
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Even sharks are closer cousins to humans than they are to lampreys and hagfish the only modern survivors of the once thriving and diverse group of jawless fishes but again, we call them all fish.
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The oldest fossil related to all modern vertebrates, the ostracoderm a jawless, bony-plated fish, dates to about 490 million years ago.
Trout and Salmon of North America
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At a quick glance, jawless fish such as the lamprey above don't appear to have much in common with jawed fish or any other back-boned creature.
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[[ostracoderm]] s jawless fish related to present-day [[lamprey]]
Conservapedia - Recent changes [en]
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Remains of ostraderms (jawless, armored fish) from Ordovician rocks comprise some of the oldest vertebrate fossils.
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By the Middle Devonian the armoured jawless ostracoderms were in decline, and instead the jawed fish were undergoing a great evolutionary radiation in both the sea and in freshwater.
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These were jawless, armored fish informally called ostracoderms, but more correctly placed in the taxon Pteraspidomorphi.
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In traditional classifications, the hagfish, lampreys, and extinct armored jawless fish are grouped together in the paraphyletic Class Agnatha.
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The containing group of jawed vertebrates and jawless fishes is vertebrata.
A New Book
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Sufficient articulated material exists to show that these animals were agnathans (jawless vertebrates), with a bony exoskeleton, and they appear to have inhabited shallow-marine environments.
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Most jawless species went extinct long ago and are known only from the fossil record.
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Litman next plans to look for novel immune genes in jawless vertebrates, such as lamprey and hagfish.
