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Are there animals that are present in two different classes, like amphibian and bird, reptile and mammal etc.?

Chris
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user29362
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  • Like mammals also being vertebrates? – WYSIWYG Jan 25 '17 at 08:36
  • @WYSIWYG FOR EXAMPLE frog is an amphibian and a mammal (this is not correct it's just an EXAMPLE)..Are there animals present in two different classes? – user6918687 Jan 25 '17 at 08:47
  • @WYSIWYG Wouldn't taxonomist propose a new class if some species (somehow) showed characteristics of 2 close classes? – Mockingbird Jan 25 '17 at 13:16
  • Short answer: No. Taxonomy is about categorizing and an organism cannot be placed to different taxa. – have fun Jan 25 '17 at 14:27
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    @WYSIWYG Mammals are a class, vertebrates compose a subphylum. – bpedit Jan 25 '17 at 18:05
  • An organism is not placed into two classes, an amphibia is very different from a mammal. During classification the characters of an organism are considered before it is placed in a particular taxon. You may read ncert class XI biology(the chapters are available online), the concept is explained in the most comprehensible way. – Tyto alba Jan 25 '17 at 20:29
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    Classes are a holdover from Linnean classification that don't have any real taxonomic meaning in modern systematics. – kmm Jan 25 '17 at 22:07

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