Marston Magna 'Marble' of England

This image is of a ammonite fossil plate. Ammonites seen in this plate are Promicrocerus planicosta (J Sowerby and Asteroceras smithi (J de Sowerby). It was found in Obtusum beds of the Lower Lias of Marston Magna near Yeovil England. This layer is rarely exposed except for in streambeds and when well shafts are dug. These ammonites existed during the Lower Jurassic Period. This stone was part of the collection of James of Charmouth, a 19th century geologist.

Specimen displayed at the Lyme Regis Museum in England as of August 2016.

Learn more at www.lymeregismuseum.co.uk

3D Printed Turritella Shell

Here are several images of a Turritella shell printed on a 3D printer. The design was created in modeling software. Link here: http://www.thingiverse.com/thing:13668

It was printed with glow in the dark PLA filament from 3D Solutech: https://www.amazon.com/gp/product/B00ME7NHJ8/ref=oh_aui_detailpage_o02_s00?ie=UTF8&psc=1

Here is a link to my friend Dave's blog showing a Cretaceous Turritella fossil:
http://viewsofthemahantango.blogspot.com/2012/05/turritella-shell-mold-from-mt-laurel.html

Cretaceous Turritella fossil from Mississippi:
http://louisvillefossils.blogspot.com/2013/04/cretaceous-turritella-fossil.html

Nashville Tennessee Coral Fossil

My father found this fossil in Nashville, Tennessee. It appears to be Plasmopora sp. coral fossil. The time period would be Silurian. This website http://tennesseefossils.com/Geology05.php lists formations in that area as Decatur and Brownsport.