Geotrade Bohemia, in cooperation with the Prague Botanic garden, prepared an exhibition of the Petrified Forest. You may see it at the Botanic garden.

Petrified Forest

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Projects prepared for presentation at the Prague Zoological garden in Prague - Troja

1. Project - Traces of time

When we watch the animals of today in a zoo, we may not even think about how long a journey life has taken on our planet to reach the forms we can see today. Even our today's state is not final, because life in its various forms keeps developing, even though it is not too apparent in the lifetime span of man.

• Traces of time Before entering the zoo our attention is caught by the walk of fame. It is built in the style of the walk of fame of famous film stars in Hollywood, USA. Here we do not celebrate stars, whose fame shall one day pass, but the true winners of evolution. We would like to continue this project inside the zoo. The idea consists of building a visitor's route with the working title "Traces of time". Objective: This exposition should present visitors with the petrified prints of animals preserved for hundreds of millions of years, and the possibility of comparing them with the prints of today's animals, as they will be side by side. Visitors can than imagine what the bygone world was like and compare his footprint to the extinct and present-day animals. Exhibits: • Dinosaur prints • Mammoth • Tertiary period animals • Predecessors of man. The footprints so far end with the footprint of the American astronaut from Apollo... the presentation form so far: Animal footprints in mud under ideal conditions were flooded by subsequent sediments and petrified during other geological processes. That is how traces of long gone forms of life were preserved at several localities in the world. Copies of these prints will be selected for the presentation, which can be inlayed into the sidewalk, road or by them at any time. Cast dinosaur prints

2. Project - Petrified world

The petrified world or journey to the primeval ages
The name of this exhibition was inspired by the well-known film "Journey to the primeval ages", where its heroes are concerned with just the same question.

Objective: The objective is to show visitors what life looked like dozens and hundreds of millions of years ago. To what ancestors do we owe current life form as we know it today. Thus contributing to the current theme of preserving and protecting life on our planet. What makes this exhibition unique is its form of presentation. Form: The ancestors of our current animals are preserved as petrifacts, the most unique of which adorn museum collections or depositories. Our objective on the other hand is to familiarize visitors with the exhibits in the form of an educational trail, where they can have a good look at the exhibits and ponder life and its forms on their own. The educational trail, the main part of which shall be outside, will feature both quality specimens of large fossils, casts of museum exhibits in artificial stone, which could not be presented in this form in original. The advantage is that the visitor may touch everything and compare life forms so distant. The exposition is focused mainly on children, families and students. The fossils are classified as we know it from textbooks, the table is taken from the open dictionary Wikipedia. Agnotozoic era 542 Ma - Phanerozoic era - present era 542 Ma - Paleozoic Era - 251 Ma 251 Ma - Mesozoic Era - 65 mA 65 Ma - Tertiary Period - and the present Cambrian Ordovician Silurian Devonian Carboniferous Permian Triassic Jurassic Cretaceous Paleogene Neogene Quartenary For outside presentation the following fossils are prepared, for example:  Stromatolite  Trilobites  Cephalopods (orthoceras etc.)  Ammonites  Ichthyosaur  Archeopteryx  Stromatolites It is the oldest fossil, visible by plain eye, the age of some specimens is estimated at 2,5 billion years The polished rock on the photograph has dimensions 40x30cm, we also have other polished specimens sized up to approx. 60x60 cm. Natural boulders may have longer sides of over 100cm. This exhibit belongs to the category Archeozoic, Paleozoic Era 2500-480 mil. years  Trilobites. Surely the most renowned petrifact in the Czech lands. Not only thanks to the film "Journey to the primeval ages", but also thanks to the history and research of Joachim Barrand. Trilobites sized 8-30cm, several different kinds in artificial rock for outside installation. Trilobites are a typical Paleozoic era petrifacts 530-251.4 mil. years  Cephalopods A highly varied group of cephalopods, pelecypods and other animals. A unique display of life in the Devonian sea. Large limestone slab, sized 124x105 cm, thick 12cm, abundant in fossils of various animals, see detail photo. Orthoconnian Cephalopods are an example of life evolution in the Paleozoic era 488-199,6 mil. years  Ammonites Large specimens of ammonites belong among the favourite fossils of visitors. The gigantic shells of cephalopods are truly very interesting and always admired. Two specimens with diameters 48 and 57 cm Both specimens originate from the Czech Republic and they are classified as Mesozoic Era 200-65.5 mil. years  Ichthyosaur Thanks to mutual cooperation with the Charles University, faculty of paleontology, for which we did some demanding restorations of exhibits, we may present our visitors with a copy of a unique Ichthyosaur fossil. Large slab with fossil, sized 224x47 cm. Ichthyosaur -small slab, sized 128x30 cm, the right one is made of artificial stone and after a colour retouch it will correspond to the original, whose colour is somewhere between both copies. The left one is made of plaster. Photograph of plaster cast for the larger ichthyosaur. Ichthyosaur is a fossil from the era of large life forms, typical for the Mesozoic Era 199-189 mil. years  Archeopteryx Slab sized 38x48 cm It is the copy of one of the most renowned fossils worldwide, which nearly became the cause of a German-English war. It is a Mesozoic fossil, aged 150.8-145.5 mil. years In our depositaries we found one more interesting fossil suitable for exterior exhibiting. Colonies of Cretaceous pelecypods, the stones are around 40x40 cm. It is a group of colonies of Cretaceous pelecypods from the locality Libná Other new exhibits: This list of exhibits may be enlarged according to your ideas with other extraordinary objects that we will prepare in time. We have presented some during your visit. They are copies of exceptional collectors' fossils for exterior installation. Our collections also include some exhibits, which may not be displayed outside, as their character designates them for interior exhibitions. This is due to their size, or no copy may be made of them, also the exhibits of copies and originals must be balanced. It is open to consideration to place these exhibits in a wall or natural rock in glass compartments. That is why we also prepared exhibits for an interior exposition:  mammoth molars, jaws and bones  skulls and teeth of cave bears  dinosaurs eggs and nests  superb specimens of petrified fish, reptiles and other animals  mammoth molars, jaws and bones  skulls and teeth of cave bears These two groups belong to the direct ancestors of our present day animals and man. Other interior specimens are from the distant Mesozoic Era and they are:  dinosaurs eggs and nests Detail of the nest of an Oviraptor 4. Objectives and realization of the project Our objective is to show some interesting moments in the evolution of life from the dawn of ages to the ancestors of our present animals and ourselves. The whole educational trail will have unified graphic marking and information tables. Each exhibit will be furnished with a description tag and its age will be marked on the axis of the evolution of life on Earth. Exhibits will be selected with regard to their interest, educational value and overall concept of the exhibition. We are offering you cooperation in this activity, where our employees shall be at your disposal as well as our depository and gallery. We believe that together we can make an attractive exhibition for the visitors. Page 1/3    Article continued