List of all exhibits. Click on one of them to go to the exhibit page. The topics allow exhibits to be selected by their concept categories. On the right, you can choose the settings of the list view.
The list below shows links between exhibits in a non-standard way. The points denote the exhibits and the connecting lines are connections between them, according to the selected categories.
Enter the end dates in the windows in order to set the period you are interested in on the timeline.
- Date of production the Mesozoic era – Upper Jurassic
- Place of discovery surroundings of Kraków
- Dimensions height: 10.5 cm, length: 10.5 cm
- ID no. ZNG PAN D-I-24
- Availability on exposure
- Object copyright The Geological Museum of the Institute of Geological Sciences, Polish Academy of Sciences
- Digital images copyright public domain
- Digitalisation RDW MIC, Małopolska's Virtual Museums Plus project
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”.more
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”.
The body of this animal was fitted into a subcutaneous carapace made of plates, usually joined with sutures covered with calcareous, movably mounted thorns. Due to their appearance, sea urchins can be divided into regular urchins of radial symmetry, and irregular ones of bilateral symmetry.
Regular sea urchins are animals of a spherical, mainly flattened carapace outline, covered with long and rare thorns. Irregular sea urchins, on the other hand, are distinguished by a heart-shaped or disk-like carapace which is often elongated and covered with short thorns.
In the case of recovered specimens, they usually retain both their carapaces and thorns. They are seldom found together.
Elaborated by Barbara Kietlińska-Michalik (The Geological Museum of the Institute of Geological Sciences, Polish Academy of Sciences), editorial team of Małopolska’s Virtual Museums, © all rights reserved
Franciszek Bieda, Paleozoologia, vol. I, Warsaw 1966.
Urszula Radwańska, Podstawy paleontologii, Warsaw 2007.