Vertebrate - definition. What is Vertebrate
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SUBPHYLUM OF CHORDATES
Vertebrata; Vertebrates; Vertebrate viruses; Vertibrate; Vertabrate; Subphylum vertebrata; Subphylum vertebrate; Animals with backbone; Evolution of vertebrates; Vertebrate biology; Vertebrate animals; Reproductive systems of vertebrates; Vertebrate evolution; Anatomy of vertebrates; Prehistoric vertebrates; Evolutionary history of vertebrates; Reproductive physiology of vertebrates; Ossea
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  • The early vertebrate ''[[Haikouichthys]]''
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  • backbone]] that characterizes the vertebrates.
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  • Traditional spindle diagram of the evolution of the vertebrates at class level
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vertebrate         
(vertebrates)
A vertebrate is a creature which has a spine. Mammals, birds, reptiles, and fish are vertebrates.
? invertebrate
N-COUNT: oft N n
vertebrate         
n.
Vertebral, back-boned animal.
Vertebrate         
·noun One of the Vertebrata.
II. Vertebrate ·adj ·Alt. of Vertebrated.

ويكيبيديا

Vertebrate

Vertebrates () comprise all animal taxa within the subphylum Vertebrata () (chordates with backbones), including all mammals, birds, reptiles, amphibians and fish. Vertebrates represent the overwhelming majority of the phylum Chordata, with currently about 69,963 species described. Vertebrates comprise such groups as the following:

  • jawless fish, which include hagfish and lampreys
  • jawed vertebrates, which include:
    • cartilaginous fish (sharks, rays, and ratfish)
    • bony vertebrates, which include:
      • ray-fins (the majority of living bony fish)
      • lobe-fins, which include:
        • coelacanths and lungfish
        • tetrapods (limbed vertebrates)

Extant vertebrates range in size from the frog species Paedophryne amauensis, at as little as 7.7 mm (0.30 in), to the blue whale, at up to 33 m (108 ft). Vertebrates make up less than five percent of all described animal species; the rest are invertebrates, which lack vertebral columns.

The vertebrates traditionally include the hagfish, which do not have proper vertebrae due to their loss in evolution, though their closest living relatives, the lampreys, do. Hagfish do, however, possess a cranium. For this reason, the vertebrate subphylum is sometimes referred to as "Craniata" when discussing morphology. Molecular analysis since 1992 has suggested that hagfish are most closely related to lampreys, and so also are vertebrates in a monophyletic sense. Others consider them a sister group of vertebrates in the common taxon of craniata.

أمثلة من مجموعة نصية لـ٪ 1
1. The 30 new species of fish include one which is the world’s second smallest vertebrate.
2. Simmons chairs the vertebrate zoology division at the American Museum of Natural History in New York.
3. Britains smallest fish, and vertebrate, is the marine Guillets goby, Lebetus guilleti, which measures 24mm.
4. And measuring no longer than a fingernail, it is officially the world‘s smallest vertebrate.
5. Holtz, Jr., a vertebrate paleontologist at the University of Maryland, said Friday.