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Topic: Hyperoartia


  
  Vertebrata
Extant vertebrates comprise two clades: the Hyperoartia, or lampreys, and the Gnathostomata, or jawed vertebrates.
In addition, there is a number of taxa of fossil jawless vertebrates which were formerly referred to as the "ostracoderms" ("shell-skinned") because most of them possess an extensive, bony endo- and exoskeleton.
Some monospecific genera, Jamoytius, Endeiolepis, and Euphanerops, formerly referred to the Anaspida, are now removed from that clade and may be more closely related to lampreys (see Hyperoartia).
tolweb.org /tree?group=Vertebrata&contgroup=Craniata   (1770 words)

  
 Vertebrata
Euconodonta: comb or claw shaped denticle feeding apparatus; large, anterior eyes.
Hyperoartia: mouth sucker with annular cartilage; spine-shaped processes on gill arches.
Pteraspidomorpha: head armor composed of large, median ventral and dorsal dermal plates; tubercles on the dermal plates shaped like oak leafs.
homepage.mac.com /pfhreak/paleontology/clade/V/vertebrata.html   (348 words)

  
 [No title]
France' HomePage=_; TitleGraphic hyperoartia.gif; TitleGraphicCaption 'Some modern lampreys (top) are external parasites of other fishes and suck their blood by attaching to their prey by means of a large sucker surrounding their mouth.
Lampreys have a single, median and dorsal "nostril", the nasohypophysial opening, which is situated anteriorly to the eyes.
One of the earliest known fossil lamprey, Mayomyzon (bottom), from the Late Carboniferous of Illinois, may not have been such a parasitic form and had a stouter body than modern lampreys) (after Bardack & Zangerl 1971).'; AfterTreeText 'Interrelationships of the Hyperoartia.
ag.arizona.edu /ENTO/tree/eukaryotes/animals/chordata/hyperoartia/Hyperoartia.nex   (1450 words)

  
 hypermyriorama Hypermyriorama - definition of Hypermyriorama by the Free Online ...   (Site not responding. Last check: 2007-10-30)
What does Hypermyriorama mean Hypermyriorama synonyms, Hypermyriorama antonyms.
Hyperoartia - Columbia Encyclopedia article about Hyperoartia lamprey, name for several primitive marine and freshwater fishes of the order Cyclostomata, or Hypermyriorama.
Hypermetropy: Hypermyriorama: hypernym: hypernymy: Hyperoartia: Hyperodontidae: hyperon: Hyperoodon: Hyperoodon bidens
amyloidosis.host2.webloggo.com /1141028790.html   (871 words)

  
 Chordate Encyclopedia Article @ 216.92.11.26   (Site not responding. Last check: 2007-10-30)
In the subphylum Urochordata classes Ascidiacea, Thaliacea, Larvacea are found.
In the subphylum Vertebrata (all animals with vertebrae) classes Myxini (hagfish), Conodonta, Hyperoartia (lampreys), Cephalaspidomorphi, Pteraspidomorphi, Placodermi, Chondrichthyes (sharks, rays and skates), Acanthodii (spiny sharks), Actinopterygii (ray-finned fish), Sarcopterygii (lobe finned fish), Amphibia (amphibians), Sauropsida (reptiles), Synapsida, Aves (birds), and Mammalia (mammals) are found.
Note:Lines show assumed evolutionary relationships (including extinct members of taxa)
216.92.11.26 /encyclopedia/Chordate   (336 words)

  
 Hyperoartia - English-French Dictionary - WordReference.com
We found no French translation for 'Hyperoartia' in our English to French Dictionary.
Look for a definition in our English Dictionary.
Or did you want to translate 'Hyperoartia' from French to English?
www.wordreference.com /enfr/Hyperoartia   (57 words)

  
 Chordata - Animalia - Flora And Fauna - Biology - Science -   (Site not responding. Last check: 2007-10-30)
Find out more in this site from the Animal Diversity Web.
Vertebrata - Introduction to the vertebrates and their classification, including the Hyperoartia, or lampreys, and the Gnathostomata, or jawed vertebrates.
Help build the largest human-edited directory on the web.
www.myonlinecolleges.com /school/Science/Biology/Flora_and_Fauna/Animalia/Chordata   (153 words)

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