Wednesday, April 29, 2009

Silicified Devonian Horn Coral

Here is an unidentified horn coral that was found in a Devonian area. It sparkles quite a bit in the sun so maybe it is quartz or calcite. Found in Louisville, Kentucky.


Tuesday, April 28, 2009

Brachiopod Replaced with Quartz/Calcite

Here is some Devonian rock with a brachiopod cavity filled with quartz or calcite.

It was found in Louisville, Kentucky.


Monday, April 27, 2009

Cryptolithus Trilobite Fragments


Here are some Cryptolithus trilobite fragments from Carroll County, Kentucky.


Sunday, April 26, 2009

Coral Diversity

Here is a composite rock made up coral fragments. It is Devonian judging by where it was found in Louisville, Kentucky and the rock color.


Saturday, April 25, 2009

Unknown Horn Corals Found in Louisville Kentucky

Here is a grayish rock found in Louisville Kentucky that is possibly Louisville Limestone. What find appealing to the largest of the horn corals in the rock are the layers (growth?) that appear along the horn. Not sure if these are Devonian or Silurian. The matrix they are in contains a number of crinoid stem pieces and maybe a spine or two.









Friday, April 24, 2009

Thursday, April 23, 2009

Unknown Horn Coral

Unknown horn coral with some beekite on the outside and looks like it has trails cut into it. Maybe some snails got to it. This coral was found in Louisville, Kentucky and is probably Devonian period.

It might be 2 cm diameter and 3 cm long.







Wednesday, April 22, 2009

Middle Devonian Coral: Hexagonaria

Here is a Hexagonaria coral from Devonian period. It was found in Louisville, Kentucky.


Tuesday, April 21, 2009

Blue Fossils of Lake Cumberland Kentucky

The fossils of Lake Cumberland, Kentucky that have a blue color. Three of these pictures have blue crinoid stem pieces and the fourth is part of blue brachiopod shell.

I need to find a source to describe maybe what species these are and why they are this blue color.







Monday, April 20, 2009

Rostroconch Imprint - Louisville, Kentucky

I think these are imprints of rostroconch creatures in Jeffersonville Limestone found in Louisville, Kentucky. The white material might be what is left of their shells or part of the material that made the mode. I found two pieces next to each other but they do not seem to fit together. A heavy piece of earth moving machinery crushed this rock so it is hard to say what it fully looked like.

The rostroconch I have seen found in this area are called Hippocardia.





Sunday, April 19, 2009

Unknown Devonian Horn Coral

I am not sure what this horn coral is called. This one has 43 septa and must have been deformed into an elliptical shape. This horn coral was found in Louisville, Kentucky in maybe the Jeffersonville and Louisville Limestone.

The outside has beekite patterns.








Genus Heliophyllum Devonian Horn Coral

Here are some pictures of a Heliophyllum horn coral of unknown species from the Devonian period. I make the identification as Heliophyllum because it was found in Louisville, Kentucky in the Jeffersonville Limestone and the septa have small beads or teeth along the line.

The images go from a close up of the lines to further out of the coral fragment.







Saturday, April 18, 2009

Devonian Horn Coral - Siphonophrentis elongata

The following pictures are of a Devonian horn coral called Siphonophrentis elongata first described by C.S. Rafinesque and J.D. Clifford in the 1820 article, Prodrome d' une monographie des Turbinolies fossils du Kentucky (dans l' Amerique Septentrionale) found in Annales Gen. Science, Physics Vol. 5, pages 231-235. It was referred to by them as Turbinolia buceros var. elongata.

This one was found in the Jeffersonville Limestone in Louisville, Kentucky.







Friday, April 17, 2009

Devonian Coral Emmonsia tuberosa

Using Erwin Stumm's Silurian and Devonian Corals of the Falls of the Ohio from 1964 this coral appears to be an Emmonsia tuberosa (originally described by Rominger in 1876 as a Favosites tuberosus). Its pentagonal or hexagonal corallites seem to be about 3 mm wide. There is also evidence of a smaller number of trigonal or tetragonal corallites. Found in Jeffersonville Limestone from central Jefferson County, Louisville, Kentucky.

With the white-gray rock and the straight lines almost parallel it reminds me of an art deco look from the 1920s and 1930s. The hexgonal pillars next to each other somewhat reminds me of the Giant's Causeway in Northern Ireland.





Thursday, April 16, 2009

Phacops rana Trilobite aka Eldredgeops

Here is one of the largest Phacops rana trilobite molts I have found. It is about 4 cm wide. It is quite broken up and has piece of bryozoan stem sticking through it.

It was found in Clark County, Indiana (across the Ohio River from Louisville, Kentucky) in the North Vernon Formation. This creature existed in the Devonian Period.