Thursday, March 19, 2009

Cymbiocrinus Crinoid Calyx

Here is a very small (5 mm in diameter) crinoid calyx from Crawford County, Indiana. Using University of Kentucky Dr. Chesnut's webpage I believe it is called Cymbiocrinus (Kirk, 1944) and is from the Mississippian period. It has a nice brownish-tan tint which gives it move visual depth. This is the bottom of the calyx where it attached to the stem and on the other side only small fragments of its arms remain. It is still embedded in a rock fragment with a lot stem pieces.

Wednesday, March 18, 2009

Blue Brachiopods of Lake Cumberland, Kentucky

The last visit KYANA Geological Society made to the Lake Cumberland, members came across blue brachiopods. This creature must be from the Mississippian or Lower Carboniferous time period. The fossils appear to be in the Fort Payne formation.

It also appears some beekite patterns are on parts of the shell imprint




Dr. Don Chesnut has a number of fossil images from this time period in Kentucky's history. See his site here: http://www.donchesnut.com/travels/geology/geologypictures.html#fossils

Tuesday, March 17, 2009

Alethopteris - Pennsylvanian Plant

This fossil is not from the Louisville area but I think my cousin bought it at the Falls of the Ohio fossil festival (http://www.fallsoftheohio.org/fossil_festival.shtml) which is in the Louisville area.

According to its label, it is a Alethopteris from the Pennsylvanian Period. It was found in the Strangter formation in Ottawa, Kansas.