Snake is one of scientists’ favorite species, and its soft enamel pins is also their collection. Snake is a kind of reptile in chordate. Snake is a special biological group which has evolved over 130 million years. It plays an important role in maintaining ecological balance. Snake is a kind of variable temperature animal with low degree of evolution. Its distribution and survival are greatly affected by the climate. It is a relatively stable and fragile biological group. The body of the snake is long and thin, which is divided into three parts: head, trunk and tail. There are no limbs or claw like hind limb traces on both sides of the blowhole of the lower snakes. The body is covered with scales. The head has different shapes. The nostril is located on the rostral side, but the sea snake family lives on the rostral back. There is protective transparent skin outside the eyeball, with round, vertical or horizontal oval pupils and no active eyes The eyelid is almost spherical in shape; the tongue is long and thin and bifurcated; the front jaw, the maxilla, the palatine bone, the pterygoid bone and the tooth bone are attached with the teeth with a backward curved tip, but the size, number and structure of the teeth vary with different snake species; the tail is obviously shorter than the head length.
The Zoological history of snakes
Snake is the latest group in the evolutionary history of reptiles. The earliest serpentine stone came from the Cretaceous strata of Mesozoic, more than 700000 years ago. Later, some fossils were used to make a soft enamel pins in the shape of snake. Snakes and lizards are closely related. Many scholars have found that: in the more primitive snake family, the body scales are covered with tiles, and the ventral scales are small and indistinct; the square bones of the snake are short, which limits the extreme opening of the snake’s mouth; the mandible retains the coronal bone; there are beak bones and belt bones. The bifurcated tongue, vertebrae structure and peptide fingerprints of haemoglobin in the American iguanase are similar to those of snakes. What’s more, there are not only snake like lizards with degenerated limbs in the order of lizards, but also different lizards, which can be seen in the proportion of limb length, gradually shortening until withering away. These examples are indisputable to prove that the snake originated from lizard, and evolved from the trunk of lizard according to the body extension and loss of limbs.
The habitat of snakes
The habitats of snakes vary with species, and there are many kinds of habitats. Some live in caves, some live on the ground, some live in trees, and some live in water snakes. Cave living snakes belong to some relatively primitive and low-grade small and medium-sized snakes. As a result of their adaptation to cave life, their anatomical structure is characterized by: small head, firm skull connection; small mouth, slightly prominent front of mouth, underdeveloped eyes; short tail; undifferentiated or underdeveloped abdominal scales. Such as the blind snake and the flash scale snake. Cave living snakes, more than night or dark weather to the ground activities, are non-toxic snakes. Most of the snake shaped soft enamel pins we made live on the ground. They can move quickly on the ground.
Come to our company to customize snake shaped soft Enamel Pins
If you like to study snakes, you can’t do without snake shaped soft enamel pins. Please come to our company and you will be brought all kinds of snakes you want. At the same time, we can also customize other soft enamel pins of our factory, the price is also very favorable. Our various snake shaped soft enamel pins are sold to other countries for their good quality, because there is no minimum order quantity. We will bring you the best design of snake shaped soft Enamel Pins.