Vertebrate - online puzzles

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.

Red Fox on Cold Winter Day online puzzleSiberian Husky puppy puzzle online from photoMute Swan online puzzleThe resting kitten online puzzleAmerican Cocker Spaniel puzzle online from photoKing Charles Spaniel wearing a necklace of pearls online puzzleSunset at the sea coast puzzle online from photoAiredale terrier puzzle online from photoRed fox puzzle online from photoTame rat online puzzleSwiss Shepherd with a small cat online puzzleSiberian Husky online puzzleGolden retriever online puzzleSand tiger shark online puzzleDomestic cat puzzle online from photoRabbits online puzzleCute Sheep puzzle online from photoRhodesian puppies puzzle online from photoShetland Sheepdog online puzzlePuppy online puzzleGiant lion-fish puzzle online from photoGiraffe in the African bush online puzzleRound... online puzzleGolden retriever online puzzle
Three young cats against a background of a brick wall puzzle online from photoChestnut-mandibled Toucan online puzzleYoung jaguar with its mother online puzzleCoral reef puzzle online from photoA small Pug online puzzlePuppy puzzle online from photoCourtship of two colorful parrots online puzzleGreen iguana online puzzleAra parrot puzzle online from photoPolar bear with cubs puzzle online from photoThree puppies puzzle online from photoDomestic cat puzzle online from photoThe Lion online puzzlebuttons online puzzleWhite horse in gallop puzzle online from photoPuppy of Greenland Dog online puzzleNestling of Magnificent Frigatebird online puzzleYellow Labrador online puzzleCommon Seal puzzle online from photoParrot online puzzleTwo kittens puzzle online from photoPuppies wearing woolen hats online puzzleHusky puppy puzzle online from photoAlaskan Malamute dog puzzle online from photo
Copyright 2024 www.epuzzle.info All rights reserved.