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Showing results for tags 'pennsylvanian'.
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Poorly Preserved yet almost complete Neuropteris sp. (lindahli?)
Samurai posted a gallery image in Member Collections
From the album: Missouri Plant Fossils
A long time ago I had neglected to turn over a piece of Winterset limestone that contained ferns and to my surprise on the back was this specimen! I was told it could be a Neuropters lindalhi a couple of months ago and never uploaded it onto this site. -
From the album: Mark's Mazon Creek Fossils
BOTH HALVES SIDERITE CONCRETION, SEPARATED BY FREEZE/THAW METHOD & LIGHT HAMMER BLOW. SPECIMEN 44mm X 14mm (1-3/4" x 9/16"). CONCAVE HALF FRAGMENTED INTO THREE PIECES DURING FREEZ/THAW - GLUED. MILD SULFURIC ACID BATH APPLIED. -
From the album: Mark's Mazon Creek Fossils
BOTH HALVES SIDERITE CONCRETION, SPLIT BY FREEZE/THAW METHOD & LIGHT HAMMER BLOW. SPECIMEN 72mm X 25mm (2-7/8" x 1"). FRACTURED PIECES (2) GLUED. -
From the album: Mark's Mazon Creek Fossils
BOTH HALVES SIDERITE CONCRETION, SPLIT BY FREEZE/THAW METHOD. SPECIMEN 75MM x 25MM (2-15/16" x 1").-
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- francis creek shale
- mazon creek
- (and 3 more)
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From the album: Mark's Mazon Creek Fossils
BOTH HALVES SIDERITE CONCRETION, FOUND AS IS. SPECIMEN 78mm X 22mm (3-1/16" x 7/8"). -
From the album: Mark's Mazon Creek Fossils
BOTH HALVES SIDERITE CONCRETION, SPLIT BY HAMMER BLOW. SPECIMEN 72mm X 22mm (2-7/8" x 7/8").-
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- francis creek shale
- mazon creek
- (and 3 more)
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I collected these two very small brachiopods in the LaSalle Limestone (Pennsylvanian) of Illinois. I have collected in this formation dozens of times and have not come across either before, and was hoping for some help with the IDs. @Tidgy's Dad @deutscheben @cngodles Any thoughts? Thanks in advance.
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Over the last several months I have been using a freeze-thaw method to open up some phosphate nodules I collected from a Middle Pennsylvanian site I visited in Northern Oklahoma. Recently one nodule split open to expose something. It is about 2cm in size. My gut tells me disarticulated fish bones but I am not sure. Does anyone happen to know what this could be? It was a little tough to photograph so please bear with me. If any additional photos would help, I can try again. Any help would be greatly appreciated.
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Anybody know what the species is?
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From the album: Mark's Mazon Creek Fossils
BOTH HALVES SIDERITE CONCRETION, SPLIT BY FREEZE/THAW METHOD. SPECIMEN 110mm X 32mm (4-3/8" x 1-1/4"). CONCAVE HALF GLUED -
From the album: Mark's Mazon Creek Fossils
BOTH HALVES SIDERITE CONCRETION, SPLIT BY FREEZE/THAW METHOD. SPECIMEN 110mm X 33mm (4-3/8" x 1-5/16"). BOTH HALVES FRACTURED LATERALLY - GLUED. -
From the album: Mark's Mazon Creek Fossils
BOTH HALVES SIDERITE CONCRETION, SPLIT BY HAMMER BLOW. SPECIMEN 110mm X 30mm (4-3/8" x 1-3/16"). BOTH HALVES BROKEN LATERALLY, GLUED. -
From the album: Mark's Mazon Creek Fossils
BOTH HALVES SIDERITE CONCRETION, SPLIT BY HAMMER BLOW. SPECIMEN 85mm X 7mm (3-3/8" x 5/16"). -
From the album: Mark's Mazon Creek Fossils
BOTH HALVES OF SIDERITE CONCRETION, SPLIT BY FREEZE/THAW METHOD. SPECIMEN 75 mm x 32mm (2-15/16" x 1-5/16"). ALBUMEN APPLIED. -
Upper Carboniferous (Duckmantian) Fish/shark tooth from coal measures. N. Wales.
Skatetom posted a topic in Fossil ID
Hi people! I'm a PhD student studying a Duckmantian fossil forest in North Wales. I have found these phosphatic fish/shark? teeth and scales I need an ID on. I suspect they are Adamantina Foliacea (Cuny and Stemmerik 2018) but that is a marine shark and this sequence is almost certainly completely freshwater and thought to be an upland swamp. I'm currently doing isotope work on the nodules and plant fossils and that appears to be confirming this is a completely freshwater system. Anyone have any ideas? You'll have to click on the images again once you've opened them to zoom in! Sorry for the poor quality! Thanks, Tom
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I found several heart shaped objects mixed in with a variety of stems and plant material. Are these possibly seed pods?
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From the album: Mark's Mazon Creek Fossils
BOTH HALVES SIDERITE CONCRETION, SPLIT BY FREEZE/THAW & LIGHT HAMMER BLOW. SPECIMEN 100mm X 31mm (3-15/16" x1-1/4"). ACETIC ACID BATH APPLIED. OILED W/PEANUT OIL.-
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- francis creek shale
- mazon creek
- (and 3 more)
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From the album: Mark's Mazon Creek Fossils
CONCAVE HALF SIDERITE CONCRETION, FOUND AS-IS. SPECIMEN 102mm X 35mm (4" x 1-3/8"). -
From the album: Mark's Mazon Creek Fossils
BOTH HALVES SIDERITE CONCRETION, SPLIT BY FREEZE/THAW METHOD & LIGHT HAMMER BLOW. SPECIMEN 82mm X 21mm (3-1/4" x 13/16"). -
From the album: Mark's Mazon Creek Fossils
BOTH HALVES SIDERITE CONCRETION, SPLIT BY HAMMER BLOW. TWO FLORETS (WHORLS), EACH 35mm X 30mm. SPECIMEN 45mm x 35mm (1-13/16" x 1-3/8").-
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- francis creek shale
- mazon creek
- (and 3 more)
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From the album: Mark's Mazon Creek Fossils
BOTH HALVES SIDERITE CONCRETION, SPLIT BY HAMMER BLOW. SPECIMEN 58mm X 33mm (2-5/16" x 1-5/13"). -
I've found a large number of similar looking, but fragmentary, multicuspid petalodont teeth in the LaSalle Limestone (Late Pennsylvanian) of Illinois. This is one of the more complete specimens I've found. I haven't been able to find a comparable specimen in literature, and was hoping somewhere here might have some thoughts.
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- illinois
- pennsylvanian
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From the album: Mark's Mazon Creek Fossils
BOTH HALVES SIDERITE CONCRETION, SPLIT BY HAMMER BLOW. SPECIMEN 10mm x 2.5mm (3/8" x 1/8"). Shrimp and Pecopterid pinna have been suggested as possible IDs. -
From the album: Mark's Mazon Creek Fossils
BOTH HALVES SIDERITE CONCRETION PLUS CAST, SPLIT BY FREEZE-THAW. SPECIMEN 8mm X 4mm X 2.5mm (5/16" x 3/16" x 1/8"). -
From the album: Mark's Mazon Creek Fossils
CONVEX HALF SIDERITE CONCRETION, SPLIT BY HAMMER BLOW. CONCAVE HALF SHATTERED BEYOND REPAIR. SPECIMEN 85mm X 50mm (3-3/8" x 2").-
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- francis creek shale
- mazon creek
- (and 3 more)
