Sunday, October 11, 2009
Indiana Devonian Wood
Devonian wood pieces probably from a Callixylon log. They were found in New Albany Shale in Clark County, Indiana. The wood has been coalified or vitrinized by heat and pressure over time.
Saturday, October 10, 2009
Aulocystis Coral
Two pictures of the same fossil that is some type of Aulocystis coral found in Clark County, Indiana. It is from the Devonian Period and I believe I was in the Beechwood Limestone when I found it. This fossil is relatively small and could fit in a 2 cm cube.
This particular fossil might be a Aulocystis frutectosa described by W.J. Davis in 1887 (Kentucky fossil corals, a monograph of the fossil corals of the Silurian and Devonian rocks of Kentucky, Part 2).
This particular fossil might be a Aulocystis frutectosa described by W.J. Davis in 1887 (Kentucky fossil corals, a monograph of the fossil corals of the Silurian and Devonian rocks of Kentucky, Part 2).
Friday, October 9, 2009
Indiana Button Coral Fossil
The Hadrophyllum orbignyi (Edwards & Haime, 1851) is found in the Speeds Limestone found in Clark County, Indiana. These two fossils are about the size of an American nickel. I sometimes wonder what this little Devonian Period creature looked like when alive.
Looking at this fossil sometimes makes me hungry. It reminds me of my grandmother's peanut butter cookies that had this color and texture with a criss-cross pattern pressed into them.
While doing research on a brachiopod fossil from a recent post I came across some really nice websites:
Looking at this fossil sometimes makes me hungry. It reminds me of my grandmother's peanut butter cookies that had this color and texture with a criss-cross pattern pressed into them.
While doing research on a brachiopod fossil from a recent post I came across some really nice websites:This French website on brachiopods is very well done.
The University of Iowa has some really good brachiopod images. One project they did called "Fossils In My Backyard" is great. it shows the geological map of the state of Iowa and then one can click on a county and see the fossils found there. I did not realize they had so many time periods exposed in their state.
The Alberta Palaeontological Society website is well organized. I was impressed with quality of their sample bulletin and the extensive member's guide. They even published a book on vertebrate fossils entitled, "Guide to Common Vertebrate Fossils from the Cretaceous of Alberta".
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