Unidentified Florissant Insect Fossil

This image shows an unidentified insect fossil found in the Florissant Formation of Teller County, Colorado, USA. The field of view (FOV) is 4 mm. It dates to the Eocene Epoch of the Paleogene Period.

Thanks to Kenny for the image.

Arctinurus boltoni Trilobite Fossil

Above is an image of a prone trilobite fossil called Arctinurus boltoni (Bigsby, 1825). A trilobite fossil like this is found in the Silurian Period Rochester Shale. It was found Middleport, New York, USA. The fossil was on display in the Evolving Planet section of the Field Museum of Natural History in Chicago Illinois, USA as of August 2020. Accession number is PE60823.

Glyptambon verrucosus Trilobite

Here is an image of prone trilobite fossil called Glyptambon verrucosus (Hall, 1854). As one who studies the fossils of the Silurian Period Waldron Shale, this a wonderful fossil. It was found Waldron, Indiana, USA. The fossil was on display in the Evolving Planet section of the Field Museum of Natural History in Chicago Illinois, USA as of August 2020.