This lifeform is found in China. This lifeform is native to Indo-China.
Chinese Softshell Turtle (Trionyx sinensis = Pelodiscus sinensis) is found naturally in China, Vietnam, and Taiwan, but has been introduced into Japan and the Hawaiian Islands. This turtle is usually less than ten inches in shell length.
Soft shell turtle group (Family Trionychidae) is widespread, but is not found in Australia, Europe, and South America. These turtles are characterized by having a leathery shell as opposed to the hard shell that is present in most turtles. They are a freshwater group and are excellent swimmers. They rival fish with their ability to start, stop, and turn quickly in the water. Although these turtles are air breathers, they appear to be able to stay underwater for lengthy periods of time. Evidently, they can absorb oxygen from the water through their skin. Certain writers believe that some species of soft shelled turtles can stay underwater as long as they desire. There are twenty-two different species in the Soft Shell Turtle Group. Although early authors lumped all of these into just a few genera, Ernst and Barbour in their book on "Turtles of the World" contend that these should be properly placed into at least fourteen different genera. Some modern authors now place the North American species into the Apalone genus.
Turtle and Tortoise group (Order Chelonia) are among the most primitive reptiles. They are egg-laying creatures characterized by having four legs, a tail, and two shells each made up of many scales that are joined together. There are about two hundred and fifty species of turtles in the world. Carl Ernst and Roger Barbour published a book entitled "Turtles of the World" by the Smithsonian Press in l989. This work covers all of the known species. The authors note that there are two hundred and fifty-seven species of living turtles. Many of these species are pictured and discussed here.
The following overview of the various families included in the Turtle Order is based on the aforementioned publication:
SCIENTIFIC NAME COMMON NAME NUMBER OF SPECIES
Pelomedusidae Side Necked 23 species
Chelidae Side Necked 36 species
Kinosternidae Mud and Musk 22 species
Dermatemydidae River Turtle 1 species
Carettochelyidae Pig Nose 1 species
Trionychidae Soft Shelled 22 species
Dermochelyidae Leatherback 1 species
Cheloniidae Sea Turtles 6 species
Chelydridae Snapping turtles 2 species
Platysternidae Big Headed 1
Emydidae Pond and Box 91 species
Testudinidae Tortoises 50 species
256 total species
While the above counts are currently reliable, they will be impacted by findings as research continues. For example, the exact count of the species of tortoises in the Galapagos and placement of the Florida Snapping Turtle might change these counts.
Reptiles (Class Reptilia) are an ancient group of scaled chordates. These scales may be permanently joined, as in the turtles, or flexible, as in the snakes. Reptiles are land-based. Their eggs are laid on land and the young are air breathing.
Backboned Animals (Phylum Chordata) are the most advanced group of animals on earth. These animals are characterized by having a spinal cord or backbone. Most members have a clearly defined brain that controls the organism through a spinal cord. Fish, amphibians, reptiles, birds, and mammals are in this phylum.
Currently, some taxonomists believe that the fish should be divided into two groups (sharks and regular fishes) and that there are some other primitive groups in the phylum such as hagfish or lampreys.
Animal Kingdom contains numerous organisms that feed on other animals or plants. Included in the animal kingdom are the lower marine invertebrates such as sponges and corals, the jointed legged animals such as insects and spiders, and the backboned animals such as fish, amphibians, reptiles, birds, and mammals.