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Showing results for tags 'pennsylvanian'.
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From the album: Mark's Mazon Creek Fossils
BOTH HALVES SIDERITE CONCRETION, SPLIT BY HAMMER BLOW. SPECIMEN 18mm X 10mm (3/4" x 7/16"). -
C0071 ?Aviculopecten mazonensis + ?Mazonomya mazonensis
Mark Kmiecik posted a gallery image in Member Collections
From the album: Mark's Mazon Creek Fossils
BOTH HALVES SIDERITE CONCRETION, SPLIT BY HAMMER BLOW. Aviculopecten SPECIMEN 12mm X 11mm (1/2" x 1/2"). Mazonomya SPECIMEN 10mm X 6mm (7/16" x 1/4"). -
From the album: Mark's Mazon Creek Fossils
BOTH HALVES SIDERITE CONCRETION, SPLIT BY HAMMER BLOW. TWO WHORLS, INCOMPLETE, BUT VERY GOOD DETAIL. SPECIMEN 26mm X 19mm (1" X 3/4). CONVEX HALF FRAGMENTS GLUED INTO POSITION. -
From the album: Mark's Mazon Creek Fossils
BOTH HALVES SIDERITE CONCRETION, SPLIT BY HAMMER BLOW. SPECIMEN 40mm X20mm (1-9/16" X 13/16"). THIS ONE WOULD HAVE BEEN MUCH BETTER HAD I FREEZE/THAWED IT INSTEAD OF HAMMERING IT OPEN. -
From the album: Mark's Mazon Creek Fossils
BOTH HALVES SIDERITE CONCRETION, SPLIT BY HAMMER BLOW. SPECIMEN 39mm X 18mm (1-9/16" X 11/16"). -
From the album: Mark's Mazon Creek Fossils
BOTH HALVES SIDERITE CONCRETION, SPLIT BY HAMMER BLOW. SPECIMEN 20mm X 9mm (13/16" X 3/8"). OILED W/PEANUT OIL. -
From the album: Mark's Mazon Creek Fossils
FOUND AS-IS, CONCAVE HALF OF SIDERITE CONCRETION. SPECIMEN 53mm X 15mm (2-1/8" X 5/8"). ALBUMEN APPLIED. AN EARLY ATTEMPT AT ENHANCEMAENT -- OBVIOUS FAILURE. -
Last Sunday I took the day to scout some former coal-mined land in western Indiana as well as revisit some sites I hadn’t been to in a few years. The mines at these sites were working the Springfield, Hymera, and Danville coals at various points in the mid-late 20th century. The land has been reclaimed to varying degrees, but I hoped that typical Mazon Creek-like fossil-bearing concretions could still be found, despite almost no information in the literature. Temperatures were a little chilly with the wind blowing as I arrived at the first site. There to greet me was a herd of cattle grazing on the property, including this friendly? individual. I looked at the ground as I walked along the road to the property and quickly saw some promising concretion-shaped rocks. In a very good sign, I also found a faint but distinctive fern that had already split. The finds weren’t frequent, but consistent enough to keep me searching. In addition to the cows, I was completely surprised to find my myself joined by a veritable army of black and yellow flat-backed millipedes that were marching along the ground everywhere I turned. I have never seen anything like it! Here are two of them making their way somewhere. Out in the pasture I came across this sizable cable, which I can only imagine is a remnant of the former mining activity. I ended up with about a gallon of concretions and I’m excited to see what they may hide within. I did find one additional already split fern as well. I then made a short drive to the second site I had in mind. This one also presented me with immediate encouragement, with this tiny Neuropteris pinnule showing up only a few feet from where I parked my car. Walking up and down a dirt/gravel road under construction, I found many potential concretions, including this faint Annularia and an interesting one with a productid brachiopod poking out. I collected a nice little pile of concretions from this site and made my way to the final location, where I had collected previously a few years back. Here I found at least a gallon of nice-shaped concretions, and also came across an already-split Macroneuropteris, my first mostly-complete one from here. It was a beautiful day to be outside and as a bonus I now have many concretions to start freeze-thawing- hopefully these promising shapes will pay off and I will have some new sites to start visiting regularly.
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- 20
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- carboniferous
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Howdy! Just posting some of my finds for ID. Feel free to correct or specify. I can provide dimensions if needed as it's hard to get good pics with a measure of some of these. The first two look like Asterophyllites to me. The third, fourth and fifth, I'd guess Sphenopteroids (the fourth is only 1 cm from top to bottom). The sixth I think is Annularia. The rest I believe are Neuropteroids.
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- 5
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- carboniferous
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From the album: Mark's Mazon Creek Fossils
BOTH HALVES SIDERITE CONCRETION, SEPARATED BY FREEZE/THAW METHOD & LIGHT HAMMER BLOW. SPECIMEN 22mm X 19mm (7/8" x 3/4"). TWO FRAGMENTS OF RIM Of CONVEX HALF GLUED INTO POSITION. -
From the album: Mark's Mazon Creek Fossils
BOTH HALVES SIDERITE CONCRETION, SPLIT BY FREEZE/THAW METHOD & LIGHT HAMMER BLOW. SPECIMEN 35mm X 10mm (1-3/8" x 7/16"). CONCAVE HALF BROKEN - GLUED. -
From the album: Mark's Mazon Creek Fossils
BOTH HALVES SIDERITE CONCRETION, SPLIT BY FREEZE/THAW & LIGHT HAMMER BLOW. SPECIMEN 11mm x 5mm (7/16" x 3/16"). -
From the album: Mark's Mazon Creek Fossils
BOTH HALVES SIDERITE CONCRETION , SPLIT BY FREEZE/THAW & LIGHT HAMMER BLOWS. SPECIMEN 40mm x 11mm (1-5/8" x 7/16"). -
From the album: Mark's Mazon Creek Fossils
BOTH HALVES SIDERITE CONCRETION , SPLIT BY FREEZE/THAW & LIGHT HAMMER BLOW. SPECIMEN 25mm x 17mm (1" x 11/16"). -
E0066 Macroneuropteris scheuchzeri basal pinnule
Mark Kmiecik posted a gallery image in Member Collections
From the album: Mark's Mazon Creek Fossils
BOTH HALVES SIDERITE CONCRETION, SPLIT BY FREEZE/THAW METHOD. SPECIMEN 30mm x20mm (1-3/16" x 13/16"). UNIDENTIFIED "GROWTH" AT BASE OF PINNULE, CONVEX HALF ONLY. -
From the album: Mark's Mazon Creek Fossils
BOTH HALVES SIDERITE CONCRETION, SPLIT BY HAMMER BLOW. SPECIMEN 41mm X 10mm (1-5/8" x 7/16"). BOTH HALVES BROKEN - GLUED. -
From the album: Mark's Mazon Creek Fossils
BOTH HALVES SIDERITE CONCRETION, SPLIT BY HAMMER BLOW. SPECIMEN 20mm X 8mm (13/16" x 5/16"). -
From the album: Mark's Mazon Creek Fossils
FRAGMENT OF BOTH HALVES OF SIDERITE CONCRETION. SPECIMEN APPROX. 30mm X 20mm (1-3/16" x 13/16"). ALBUMEN APPLIED. -
From the album: Mark's Mazon Creek Fossils
BOTH HALVES OF SIDERITE CONCRETION, SPLIT BY HAMMER BLOW. AVERAGE PINNULE 27mm X 7mm (1-1/16" x 1/4"). THREE CONCAVE AND TWO CONVEX PINNULES. ALBUMEN APPLIED. -
Need ID help, either confirm or refute my guesses on items E0055 and H0009, and then what is that at the base of the pinnule in item E0066? Thank you in advance for any suggestions.
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- help identify please
- mazon creek
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From the album: Mark's Mazon Creek Fossils
BOTH HALVES SIDERITE CONCRETION, SPLIT BY FREEZE/THAW & LIGHT HAMMER BLOWS. SPECIMEN 75mm x 15mm (3" x 5/8"). BEGAN CRUMBLING IN STORAGE - GLUED. -
From the album: Mark's Mazon Creek Fossils
BOTH HALVES SIDERITE CONCRETION, SPLIT BY HAMMER BLOW. SPECIMEN 90mm X 19mm (3-1/2" x 3/4"). -
From the album: Mark's Mazon Creek Fossils
See C0089a to view counterpart. -
From the album: Mark's Mazon Creek Fossils
BOTH HALVES SIDERITE CONCRETION, SPLIT BY HAMMER BLOW. SPECIMEN 125mm X95mm (4-15/16" x 3-3/4"). BOTH HALVES BROKEN - GLUED. See C0089b to view counterpart. -
From the album: Mark's Mazon Creek Fossils
BOTH HALVES SIDERITE CONCRETION, SPLIT BY HAMMER BLOW. SPECIMEN 59mm X 22mm (2-5/16" x 7/8").
