The geological history of the Earth is briefly presented in this hall of the second floor, as well as the evolution of the organic world through time. Some attractive well preserved fossils from different geological periods are shown.
The stratigraphy of the present Bulgarian territory is illustrated in wall posters and maps, accompanied with the most characteristic fossils and sedimentary rocks for each period.
A wall poster
presents interesting information about the ammonites,
a group of mollusks which are among the most abundant and beautiful of all fossils. One of the most attractive specimens is the giant ammonite
from the Upper Santonian of Shumen Region — Parapuzosia
sp., which diameter is 144 cm. Its age is estimated about 84 million years. This is the largest invertebrate fossil ever found in Bulgaria.
Some fossil mammals are also exhibited here. Most interesting of them are:
the first found (and the only one from Bulgaria so far) skull of the gigantic dear (Megaloceros giganteus)
the latest representatives of the European bison (Bison bonasus) from Bulgaria
tooth from the first European representatives of the gomphotheriid Anancus arvernensis (Proboscidea)
The most part of the fossil mammal collections of the Museum is deposited and exhibited at the Palaeontological Museum in Asenovgrad