Connecting the environment of the ancient past with the natural and cultural history of yesterday and today.



Featured Fossil


This page features a fossil with details about the specimen, its age,

where it was found, and a nugget of interesting information. Not every

specimen will be perfectly preserved - but all are a marvel of the natural world!

All geological time periods are represented.


Dawsonoceras amycus showing lirae and annulations

Fossil Type:



Dawsonoceras amycus (Hall)


Waldron Shale


Wenlockian, Middle Silurian


Clark Co., Indiana


Close-up showing detail on this Silurian nautiloid cephalopod. It shows undulating external growth lines (lirae) and annulated ridges.  Anonymous collection. FOV = 2cm

Date Posted:

August 26, 2016


Archived Featured Fossils

Archived images are now arranged in each category by geological time period.

How to Submit a Featured Fossil

Created April 12, 2012