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vertebrate
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major vertebrate groups lamprey
Observe the hagfish's horny teeth and scaleless exterior covering a cartilaginous skeleton
southern stingray (Dasyatis americana or Hypanus americanus) bull shark American paddlefish (Polyodon spathula) mola pond turtle sandhill cranes (Grus canadensis)
The video thumbnail image shows a brown-speckled bird perched on a branch, singing with an open beak.
For Students
vertebrate summary
Quizzes
Sea otter (Enhydra lutris), also called great sea otter, rare, completely marine otter of the northern Pacific, usually found in kelp beds. Floats on back. Looks like sea otter laughing. saltwater otters
Animal Group Names
Lion (panthera leo)
Deadliest Animals Quiz
Young chimpanzee dressed in a shirt and sweater vest, scratching his head thinking. (primates)
Wild Words from the Animal Kingdom Vocabulary Quiz
Mute swan with cygnet. (birds)
Match the Baby Animal to Its Mama Quiz
vulture. An adult bearded vulture at a raptor recovery center. The Gypaetus barbatus also known as the Lammergeier or Lammergeyer, is a bird of prey and considered an Old World vulture.
Animal Factoids
Related Questions
Read Next
animal. Amphibian. Frog. Anura. Ranidae. Frog in grass.
Abundant Animals: The Most Numerous Organisms in the World
sea turtle (reptile). Green turtle (Chelonia mydas) (C. mydas) off the Hawaii Islands, Pacific Islands. Green sea turtle, chelonian. Homepage blog 2011, science and technology, animal
5 Vertebrate Groups
Spider monkey swinging in a tree. (primate, jungle animal)
Why Do Animals Have Tails?
Prairie falcon (Falco mexicanus) in mid-flight.
11 Questions About Birds Answered
cat. orange and white persian cat with long hair, snarl, growl, teeth
7 Questions About Mammals Answered
Discover
An ancient egyptian hieroglyphic painted carving showing the falcon headed god Horus seated on a throne and holding a golden fly whisk. Before him are the Pharoah Seti and the goddess Isis. Interior wall of the temple to Osiris at Abydos, Egypt.
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A human Inuit skull in a stone chambered cairn in Ilulissat in Greenland. These ancient graves are pre christian and are at least 2000
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Santa Claus flying in his sleigh, christmas, reindeer
Was Santa Claus a Real Person?
Title: Senate Square, St. Petersburg, December 14, 1825: repression of the troop mutiny - watercolor by Carl Ivanovitch Kollman, 1825 depicts Decembrist uprising clashing with cavalry, with spectators watching. (new style December 26, 1825) Europe. Saint
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Thanksgiving Turkey with all the sides
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Rural Irish landscape, Sligo, Ireland.
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Woman tied to a ducking stool, a method of punishment by means of humiliation, beating, or death. (cucking stool)
8 Unusual Punishments Inflicted on Women Throughout History

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Videos

Observe the hagfish's horny teeth and scaleless exterior covering a cartilaginous skeleton
Hagfishes are primitive, jawless fish.
Video: Encyclopædia Britannica, Inc.
Why don't birds have teeth?
Birds descended from dinosaurs, but they don't have their ancestors' bite.
Video: Encyclopædia Britannica, Inc.

Images

major vertebrate groups
The major groups of vertebrates include fishes, amphibians, reptiles, birds, and...
Encyclopædia Britannica, Inc.
lamprey
Lamprey (Lampetra) on rainbow trout.
Oxford Scientific Films/Bruce Coleman Ltd.
southern stingray (Dasyatis americana or Hypanus americanus)
Southern stingrays (Dasyatis americana or Hypanus americanus) are...
Georgette Douwma/Nature Picture Library
bull shark
Bull sharks (Carcharhinus leucas) inhabit tropical and subtropical oceans...
Bob Abrams—Bruce Coleman Inc.
American paddlefish (Polyodon spathula)
American paddlefish (Polyodon spathula) is the only living member of family...
© Lapandr/Dreamstime.com
mola
The common mola, or ocean sunfish (Mola mola), has a distinctive bullet-shaped...
Bob Evans/Peter Arnold, Inc.
pond turtle
European pond turtle (Emys orbicularis).
Joe B. Blossom/Photo Researchers
sandhill cranes (Grus canadensis)
Sandhill cranes (Grus canadensis) are 35–43 inches (90–110 cm) long, with...
© ElementalImaging/iStock.com
vertebrate: skeleton
Selected vertebrate skeletons.
Encyclopædia Britannica, Inc.
generalized labyrinth of vertebrates
Generalized labyrinth of various vertebrates.
Encyclopædia Britannica, Inc.
The impact of human activities on climate change
Paleontological tree of vertebrates. From Ernst Haeckel's The Evolution of Man:...
© Photos.com/Thinkstock
longevity: animals
Maximum life spans of selected animals.
Encyclopædia Britannica, Inc.
vertebrate musculature
Trunk musculature of five representative vertebrates.
Encyclopædia Britannica, Inc.
Tree of life illustrating the three-domain classification of life-forms
The tree of life according to the three-domain system of biological classification.
Encyclopædia Britannica, Inc.
vertebrate
Representative vertebrates.
Encyclopædia Britannica, Inc.
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