Today's post is a very interesting set of fossils which I initially did not know what they were. I received an e-mail from the granddaughter of a person who found these specimens in the Estill County, Kentucky USA.
Luckily, Dave at Views of the Mahantango blog was able to identify them as Asterosoma sp., a worm/shrimp? burrow trace fossil.
They appear to be from the Breathitt Formation of Pennsylvanian Period.
Thanks to Tamara for letting me post these pictures.
Learn more:
Post about them on Fossil Forum: http://www.thefossilforum.com/index.php?/topic/28148-star-shaped-trace-fossils/
Info on the Arkansas Geological Survey blog: https://arkansasgeological.wordpress.com/tag/asterosoma/
Geology of Estill County, Kentucky: http://www.uky.edu/KGS/water/library/gwatlas/Estill/Geology.htm
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