The skeleton is an internal support structure composed of many individual, rigid organs called bones. Bones serve to provide movement of the body (in tandem with muscles and cartilage), as well as to protect internal organs and produce the hematocytes (blood cells) that deliver oxygen and fight infectious diseases. The earliest skeletons developed with the evolution of the first primitive fishes, having first evolved a spine from what was once a flexible notochord. From there, vertebrates (animals with a backbone) would evolve a number of different body styles, though always maintaining the same basic skeletal structure: 1 head, 1 body, 2 arms, 2 legs, and 1 tail. In time, some creatures would adapt in ways to reduce these body parts if the parts in question were no longer subject to necessary selection pressures that came with a changing environment. Examples would include the vestigial femurs of whales that remain in their bodies, or the curved coccyx bone of humans from which there was once a tail (though the coccyx has evolved to provide other functions as well). In rare occasions the bones of deceased animals can become fossils if the environmental conditions are right.
-Size: 9&3/4" tall x 7&1/4" wingspan -Species: Melopsittacus undulatus -Notes: A complete and beautifully articulated skeleton of a small parrot, mounted on a custom wood perch. The "budgie" is the third most popular pet after domesticated dogs and cats. -Location: Australia (and globally due to the pet trade) This item can...
-Vial Size: 3&3/4"L x 7/8"W -Species: Colinus virginianus -Notes: A fantastic two-toned specimen with bones stained purple and cartilage stained blue (and a very clearly defined esophagus). You will receive a different specimen of the same amazing quality. -Location: USA, Mexico, and the Caribbean
-Vial Size: 4&1/8"L x 2"W -Species: Gallus domesticus -Notes: A fantastic specimen with visible finger bones present, displaying its dinosaur ancestry. You will receive a different specimen of the same amazing quality. -Location: Global distribution
-Vial Size: 5"L x 2&3/8"W -Species: Passer domesticus -Notes: A fantastic specimen with visible finger bones present, displaying its dinosaur ancestry. -Location: Eurasia (introduced to North and South America, southern Africa, eastern Australia, and New Zealand).
-Size: 4&3/4"L -Species: Anas domesticus -Notes: A complete and beautiful skull of the domesticated duck. Metal rod not included. -Location: Global distribution This item can not be sent outside of the USA.
-Size: 5&3/4"L -Species: Anser domesticus -Notes: A complete and beautiful skull of the domesticated goose. -Location: Global distribution This item can not be sent outside of the USA.
-Size: 7&1/2"L -Species: Struthio camelus -Notes: A complete and large example of an ostrich skull. Ostriches are the largest birds on the planet. -Location: Sub-Saharan Africa This item can not be sent outside of the USA.
-Size: 2&1/4"L -Species: Columba livia -Notes: A great example of the skull of the rock pigeon (also known as the rock dove). The rock pigeon was a domesticated bird whose escaped, feral descendants have now populated the world. -Location: Global distribution (originally Asia, Europe, and northern Africa) This item can...
-Size: 4"W x 8"H -Species: Lonchura domestica -Notes: A complete and beautifully articulated skeleton of a finch, mounted on a custom wood perch. The Society Finch, also known as the Bangalese Finch, is a uniquely domesticated finch that's record of origin in the wild has now been lost. -Location: Global...