This image shows a Cryptolithus tessellatus fragment found years ago.  It existed in the Ordovician Period. The fossil plate was found ...

This fragment shows a mold and some of the shell replaced by brown calcite of the glabella of a Cryptolithus trilobite.  The fossil w...

TIME PERIOD : Creature existed in the Ordovician Period (about 488 to 443 million years ago) defined by the English geologist Charles La...

These pictures are of Cryptolithus  (Green 1832) trilobite fragments found east of Louisville, Kentucky USA. They are found in the Kope For...

Using Adobe Illustrator and then touching up with Adobe Photoshop I created a second version of yesterday's drawing. The thorax and pygi...

Here is a quick rendition of a Cryptolithus trilobite from the Ordovician Period. I needed to make a label for a fossil I was sending out. ...

These pictures show fragments of the Ordovician Period Cryptolithus trilobite found in Carroll County, Kentucky. It was found in the Kop...

More fossils from Pennsylvania. These trilobite fragments are quite nice. We have places east of Louisville that will yield Cryptolithus pi...

Here are some Cryptolithus trilobite fragments from Carroll County, Kentucky.

Here are several Cryptolithus sp. trilobite remains found in Carroll County, Kentucky. One still has part of its side spine intact. I have...

Here a Cryptolithus trilobite from the Orodovician time period (438-505 million years ago). It was found in Carroll County, Kentucky. It ...