Crinoid Fossil Stem Cross Section

 

Let us start off the new year with a picture of a unique looking crinoid stem cross section. It was found in the New Providence Formation of the Borden Group of Scott County Indiana USA. The fossil dates to the Mississippian Period.

Thanks to Kenny for the image.

Palaeonitella Green Alga Fossil

 

Here is a green alga fossil called Palaeonitella sp. (Kidston & Lang, 1921). It existed in the Devonian Period (417-354 million years ago). The fossil was found in Wyoming 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 PP49113.

Streptelasma corniculum Horn Coral Fossil

 

Here is a horn coral fossil called Streptelasma corniculum (Hall, 1847). It existed in the Ordovician Period (490-443 million years ago). The fossil was found in the Richmond, Kentucky 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 P9537.

Learn more about this fossil here:

https://www.ordovicianatlas.org/atlas/cnidaria/anthozoa/rugosa/streptelasmatidae/streptelasma/