The genus Edmondia was first described by de Koninck in 1841. The book is Description des animaux fossiles qui se trouvent dans le terrain carbonifére de Belgique, written in the French language. The genus occurs from 252.3 to 457.5 million years ago. It died out during the Permian–Triassic extinction event.
While sorting through the endless piles of fossil pieces I have set near the lab microscope, I found another piece of a Petalodus Tooth. This is the most incomplete of the teeth I’ve found to date, with only a microscopic tooth chip left behind. However, this helps with microscopic views
One of the best specimens of the genus Metacoceras that I currently have. Metacoceras is one of the two most common species of cephalopod found in the Brush Creek Limestone. I have difficulty assigning a species. Even in the Treatsie on Invertebrate Paleontology, there is a belief that there are
I often find the body chambers of these cephalopods embedded in limestone. They often come out as one piece, but rarely are attached to the body. A specimen I freed just today had two suture lines on it. Another common feature is a collapsed area on the chamber that leaves
A crescent shell indention showed up on the flat top of a piece of limestone. I thought maybe a large clam shell, but at this point I should know better. I hammered the rock for a while, thinking that maybe a piece would break off and reveal part of the
My first Petalodus Shark Tooth of 2020 is my fifth overall. This specimen is the first with a three dimensional root. I keep a ready supply of limestone boulders near the lab in which I can search through the matrix. This boulder perhaps came from the same general area as
Macroneuropteris is a much more rare genus than Pecopteris. However, these can be found locally in the shale below the primary limestone layer. The detail within the leaf of this specimen is stunning in my opinion. The Middle Pennsylvanian Sydney Mines Formation, found in Nova Scotia, Canada, have revealed a
There are two corals that occur locally. Stereostylus is a common solitary horn coral in Pennsylvania. These two specimens show perhaps the same species. The top piece on polished limestone is a cut cross section. The bottom piece is an eroded end sticking out of stone. The shell material eroded
I’m not certain on the genus and species. I’ve considered Meekopinna Americana and Aviculopinna peracuta as possibilities. However, upon reading an article from the Journal of Paleontology, the entire family is in need of some clarification. We understand, however, that the Paleozoic Pinnidae are in need of a complete reinvestigation;
The genus Odontopteris is one of many seed fern varieties that existed during the Carboniferous. I have a high confidence that I have the genus correct, however I am awaiting more research before I can confirm. The visible leaf of the glued specimen is 100mm in length.