Trigoniainter Laevigata bivalve belongs to the Trigoniidae family, which used to be rich in species and genera, and but at present is a relict. Fossilised specimens can be found in the deposits of the Jurassic and Cretaceous.
Presented ammonite is from the upper jurassic period. It is a very large and well-preserved type of this species. It have a flat spiral coiled shell, richly ornamented.
Presented specimens are fossils with separately preserved three teeth of Ichthyosaurus, dating back to the Upper Jurassic period, namely from —163 to —145 million years ago.
Cymatoceras patens nautilida is one of the representatives of an extinct group of cephalopods living in the sea of the Upper Cretaceous, which covered the area of present day Poland 100.5 to 66 million years ago.
Rhabdocidaris nobilis sea urchin is an extinct species of a regular echinoid which was one of the free-living sea echinoderms. Its name derives from the Greek words echinos – “hedgehog” and eidos – “figure”.
Volutis pina casimiri snail is a fossil of a snail of the Volutidae family encrusted by worms and bryozoans (a water invertebrate which formed colonies). The presented form is a kind of a fossilised natural cast, which was created when the softer parts of the organism became pickled.
Didymoceras-sp ammonite was a representative of an abundant group of extinct cephalopods living in the seas of the Upper Cretaceous, which covered the territory of present day Poland. The presented specimen is especially attractive due to its atypical shape, taking the form of a spiral rolled perpendicularly.
Ichthyosaurs were sea reptiles which evolved in the Middle Triassic, reached the peak of their development in the Jurassic, and became extinct in the Upper Cretaceous. The presented skeleton of an ichthyosaur Ichthyosaurus communis was preserved in slates.
This is a fragment of a thick layer of dolomitic ferruginous mudstone with an impression of a tuna-like fish on one side. In its abdominal section, there are preserved skeletons of smaller fish that have been eaten.
Trilobites were sea animals. Their oval and flattened body was covered with a chitinous carapace on the dorsal side. A trilobites' carapace consisted of three segments and visible body parts: a head, trunk and tail. Each of these parts could have thorns.
Appellative of crinoids (Crinoidea) comes from the Greek words krinon, which means lily, and eidos ‒ form. This marine animals characterized by calyx-shape body, have also the stem and arms. Crinoids lived in prehistoric sea c. 200 million years ago. They belonged to the echinoderms.
The presented object is a fragment of the trunk of a cycad — a fossil plant. Bennettitales (Cycadeoidopsida) is a class of extinct gymnosperms which could be found all over the world in the Mesozoic era. In Poland only several specimens of the silicified sprouts of these plants, which belong to the family of Cacadeoidaceae, are known.
Presented ammonite is unique, because of its individual mineralization, which is very rarely in the singular objects from this area. Mineralization with chalcedony and quartz, on line of the helix, created holes with a rich and colorful cross-section. Thanks to this...
The specimen comes from the historic collection gathered in 1872 by Stanisław Zaręczny. It was marked in 1891 by Józef Siemiradzki as a new specimen (currently holotype) and then described in his publication Fauna kopalna warstw oksfordzkich i kimerydzkich w okręgu krakowskim i przyległych częściach Królestwa Polskiego, Część I: Głowonogi, (The fossil fauna of the Oxfordian and Kimmeridgian layers in the Kraków area and the neighbouring part of the Kingdom of Poland, Part I: Cephalopods) in: Pamiętnik Akademii Umiejętności w Krakowie, Wydział Matematyczno-Przyrodniczy, Vol. 18, issue I.
The presented object is a trunk of a cycad — a fossil plant. Bennettitales (Cycadeoidopsida) is a class of extinct gymnosperms which could be found all over the world in the Mesozoic era.