Generally this effect occurs in individuals oftener bred in captivity by incubators, this is because many breeders incubated in the high range of temperatures for females, thereby increasing the probability of obtaining specimens with this ise.
Hard carparazon turtles, presents multiple ways of arranging the shields, standard form would be as follows
You have to remember that not all species have intergulares shields, or nuchal, and in some species, pracaudal shield consists of two shields, and in others the body is covered with skin
The most common cases in the anomaly in the arrangement and number of shields are:
1. - Shields divided:
It is the most common case, and ually affects the vertebral scutes. It is manifested by the presence of a shield divided in two, so that the union of the two shields corresponds to the shape and rface of the shield has been excised. This type of anomaly stand out much, vially.
2. - Additional Shields
In this case the number of shields is higher than the corresponding normally, but your disposal and how normal, this ually occurs in the constales and marginal. This type of anomaly does not stand out vially mcucho and only counting the s shields, we realize this anomaly. Actually it is more a case equal to anerior
3 - Lack of shields:
In rare, often gives the nuchal shield ausecia, espcially in T. hermanni, or vertebral scutess
Other deformities of the carapace.
In some extreme cases, a small turtle that has been trapped by a plastic washer which are used to make the pack of soda cans, rope, or the like, to continue growing and constriction can not get rid of this, your body is deforming ends up like this, if not death.