Here are some fossils I have found in the Devonian/Silurian period layer or Jeffersonville/Louisville limestone. These fossils were found in Jefferson County, Kentucky.
First is a cross section of a Stromatoporoid sponge.
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjx612PhTMeM-PwAyq5fO5mkkmlqNeF04fMMEgEgoq7WKQ0A2GDOL-tglaStRpBYc_qMIph5fR9iVPzUc1dpwgcCtUCIMD49sgsU-M6yAanFgxqFSy3nqWoHbWyh00qKmvzK4jiXO2q51k6/s400/stromatoporid-sponge.jpg)
This next fossil is a cross section of
Siphonophrentis elongata horn coral. I normally find this in reddish-brown-white rock but this one is light gray. On the other side it still has texture of the horn coral surface preserved.
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhxhB6GOdQB5-xoVTZ3BaN59vB1lPzBNmsVyxV7wTwLJ4e15uY5N6hPHxjUaHjv0tlxv_Rje1xv70IkYdQjFk-L5uE6XDcxNbq3DLbNMQ2rYckNGPE39QzQ7aW-NuqccnxRM2RhfN45SFQa/s400/siphonophrentis-elongata.jpg)
Here is a polyp jutting out of the surface of a
Heliolites coral.
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgm8HWIwcmfhl_VcdmTzQxS_We7nebaRI8_ncmTUnUEViras-kXJ6f687PsJDfQbgMWSTI-Mbw7In2cPGxXb4UlzweZXSso5mHtpepw-yakjRw7H1Zo7gVsPubGYK-wb7bG2VNEj-eAL4Dl/s400/polyp-on-heliolites.jpg)
Here are some pipe organ corals. I have not found a piece this big before. I have been using a ruler I got at the Cincinnati GeoFair 2009 from Kent State University exhibit. It is quite handy.
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj2fRodU_OUM98lLqyEIYJT2bevW6WXzm9KgXnDU4RH874Nu7wXGcpMc78hBOpcaBVmh2NYfl0PzWdwnSHziv2ouEm-N_UMNgIRGCrcC4-T3Qod_H1QzoWzXybXzX290eRqEr2bTDq-PceW/s400/pipe-organ-coral.jpg)
I am not sure what this next plate is called. It could be
Heliolites coraL.
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhygBMlLGY02AB3_lW9-sTbX7lNO6pRhsnblQQDh2i5fSNnLHJPlnozBIzsgjHcCOF9bRF1b9J39Ivdk5HzwdCnKAdHQlfY3r78K6EzM4VfZVPy37zXhg8Scq292kzCvpbfCCHaAbhyphenhyphenboCY/s400/heliolites.jpg)
Here is a hemispherical shaped coral that might be some sort of
Heliolites.
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEheFYzFFp2__sgWpY82K8A7izvMjibOtlKwMibtOx3kuvfpoJcHCsWPunvpy6hmMDIhh3UivNfL4PUHlW0nC3pMRvHWrJHbMqtIBz7XUAtyNuvkp6SQqGrQecTqKUytkqHlXu9oMymqcNmu/s400/heliolite-ball.jpg)
Another coral I am not sure what it is called. It has some distinctive growth rings.
Here is a Favosites or honey comb coral.