Leperditia carbonaria Ostracod Fossil

The fossil in this picture appears to be a Leperditia carbonaria ostracod. It was found in Meade County, Kentucky, USA. The creature existed in the Mississippian Period. Field of view in picture is about 2 mm.

Thanks to Kenny for the picture.

Beipiao Sturgeon Fish Fossil

I saw an interesting fish fossil for sale at the Arizona Historical Society Museum at Papago Park gift shop in October 2014.

The label said, "The Beipiao sturgeon was discovered in the area of west Liaoning Province of China. It was formed in land facies layer of the Late Jurassic Period. It was about 130,000,000 years ago."

If I recall correctly, the length was over 20 cm and the price was $250.

Encope micorpora Echinoderm

While visiting the Gallery of Natural History at the Arizona Historical Society Museum at Papago Park (1300 N. College Ave, Tempe Arizona 85281) I saw fossil specimen (AHS-NH#9854) Encope micorpora (Agassiz, 1841) sand dollar. Creatures like this are alive today and existed back to the Pliocene This one was found in El Golfo, Mexico.

Image of museum specimen taken October 2014.

Source to refer to:
http://www.nhm.ac.uk/research-curation/research/projects/echinoid-directory/taxa/taxon.jsp?id=2133

http://www.nhm.ac.uk/research-curation/research/projects/echinoid-directory/taxa/specimen.jsp?id=7192