Aulacopleura koninckii Trilobite Fossil

This picture is of an Aulacopleura koninckii (Barrande, 1846) trilobite fossil. It existed during the Silurian period. The fossil was found in Lodĕnice, Tschechien, Czech Republic. Fossil was on display at the Natural History Museum Vienna (Naturhistorisches Museum Wien) on August 2024.

Trinucleus ornatus Trilobite Fossil

 

This picture is of a Trinucleus ornatus (von Sternberg, 1833) trilobite fossil. It existed during the Silurian period. The fossil was found in Beroun, Tschechien, Czech Republic. Fossil was on display at the Natural History Museum Vienna (Naturhistorisches Museum Wien) on August 2024.

This fossil reminds me of a trilobite found in the Ordovician Period Kope Formation of Kentucky, USA called  Cryptolithus tessellatus (Green, 1832).

Ammolite - The Organic Gemstone

 

The picture above is a organic gemstone formed from the remains of ancient ammonite creatures. Below is a picture of a Placenticeras meeki (Böhm, 1898) ammonite fossil found in the Bearpaw Shale Formation of the Lethbridge District, Alberta, Canada. The fossil dates to the Cretaceous Period. Specimens were on display at the Natural History Museum Vienna (Naturhistorisches Museum Wien) on August 2024.