Specimens of Archaeopteryx original classification of a new taxon, "Archaeopteryx bavarica". The hind limbs, while showing no morphological differences from previously known specimens, were perhaps the best preserved yet and showed some unprecedented details. For example, the right foot was preserved so tightly flexed that the claws of the first and fourth toes are overlapping, indicating that a grasping or perching function was present in "Archaeopteryx", possibly as sophisticated as that of modern birds. Only the imprints of wing and tail feathers are present, and all sign of feathers comes from the counterslab. No body feathers are evident. The right wing displays a
Dinosaur tooth data that has been collected through dinosaur dental histological studies are typically unavailable through other means and has provided us with a more in-depth understanding on their biology. One of the most significant findings is that despite differences in their appearance, dinosaur teeth are essentially composed of the same dental tissues found in modern mammals, crocodilians and other amniotes, suggesting that these tissues first evolved in a common ancestor and has been retained ever since. Another finding is that the lines of von Ebner can be counted similar to tree rings to determine the age of a tooth. Furthermore, as