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  • 12. 3 Evolution of Tetrapods – VCU BIOL 152: Introduction to . . .
    Most 25,000 living species of animals that we call fishes are ray-finned fishes There in fact far more of these types of fishes than all the other vertebrates combined The fins of these fish have a unique structure— that is, they have a system of often branching bony rays (called lepidotrichia) that emanate from the base of the fin
  • Phylum Chordata - Advanced - Shape of Life
    Includes: Tunicates, Lancelets, and Vertebrates (which include Fish, Amphibians, Reptiles, Birds and Mammals)It's easy to find an example of the chordate body plan—just look in the mirror But it's more difficult to see which features we share with the rest of the chordates Chordates have their skeletons on the inside, a design that allows
  • What is an Invertebrate? - Butterfly Pavilion
    Believe it or not, 97% of all the animals in the world are invertebrates That means just 3% of the animals in the world are vertebrates (animals like humans, lions, tigers and bears) But not only do invertebrates dominate the world in numbers, but they are the most diverse and important group of animals for a healthy ecosystem
  • Glossary - A-Z Animals
    The birds skin is also covered in layers of feathers, to keep them warm but the feather also make the bird extremely light so it can fly without trouble All birds have wings and most can fly over very long distance, some species of bird migrates thousands of mile every year, while others can only fly a few feet
  • 10 Most Intelligent Animals - ThoughtCo
    10 Most Intelligent Animals - ThoughtCo
  • Perch-like Fishes (Order Perciformes) · iNaturalist
    Perciformes, also called the Percomorpha or Acanthopteri, are the most numerous order of vertebrates, containing about 41% of all bony fish Perciformes means 'perch-like' They belong to the class of ray-finned fish, and comprise over 10,000 species found in almost all aquatic ecosystems
  • Living fossil - Wikipedia
    The coelacanths were thought to have gone extinct , until a living specimen belonging to the order was discovered in 1938 A living fossil is a deprecated term for an extant taxon that phenotypically resembles related species known only from the fossil record





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