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Showing results for tags 'pennsylvanian'.
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H0020 Macroneuropteris scheuchzeri terminal pinnules
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 & LIGHT HAMMER BLOW. SPECIMEN 40mm x 20mm (1-11/16" x 7/8").-
- francis creek shale
- mazon creek
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(and 3 more)
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From the album: Mark's Mazon Creek Fossils
BOTH HALVES SIDERITE CONCRETION, SPLIT BY FREEZE/THAW METHOD. SPECIMEN 65mm X 20mm (1-9/16" x 13/16").-
- francis creek shale
- mazon creek
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(and 3 more)
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From the album: Mark's Mazon Creek Fossils
CONVEX HALF SIDERITE CONCRETION, SPLIT BY FREEZE/THAW METHOD, CONCAVE HALF CRUMBLED BEYOND REPAIR. SPECIMEN 64mm X 24mm (2-1/2" x 15/16").-
- francis creek shale
- mazon creek
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(and 3 more)
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E0067 Macroneuropteris scheuchzeri, 2 basal pinnules
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 29mm X 20mm(1-1/8" x 13/16"). CONCAVE HALF GLUED.-
- francis creek shale
- mazon creek
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(and 3 more)
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From the album: Mark's Mazon Creek Fossils
BOTH HALVES SIDERITE CONCRETION, SPLIT BY HAMMER BLOW, PARTIALLY SHATTERED. SPECIMEN APPROXIMATELY 50mm (2") IN DIAMETER. DISTINGUISHABLE FRAGMENTS GLUED BACK TO ORIGINAL POSITION. EXTENSIVE ACETIC ACID BATH & DENTAL PICK PREP.-
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- francis creek shale
- mazon creek
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(and 3 more)
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I'm stumped on this one. Unfortunately it is not very well defined, but it seems like something interesting... I haven't found anything similar before. Any thoughts are appreciated. @stats @deutscheben @bigred97 @Nimravis @Mark Kmiecik @fiddlehead @flipper559
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- carboniferous
- flora
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From the album: Mark's Mazon Creek Fossils
BOTH HALVES SIDERITE CONCRETION, SPLIT BY HAMMER BLOW. SPECIMEN 35mm X 30mm (1-3/8" x 1-3/16").-
- francis creek shale
- mazon creek
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(and 3 more)
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From the album: Mark's Mazon Creek Fossils
BOTH HALVES SIDERITE CONCRETION, FOUND AS IS. SPECIMEN 82mm X 33mm (3-3/16" x 1-5/16"), TAPERING TO 30mm (1-3/16").-
- francis creek shale
- mazon creek
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(and 3 more)
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B0013 Sublepidophloios protuberans + Lepidostrobophyllum sp.
Mark Kmiecik posted a gallery image in Member Collections
From the album: Mark's Mazon Creek Fossils
THREE PARTS, SIDERITE CONCRETION. TWO SPECIMENS IN DIFFERENT LAYERS. SPLIT BY HAMMER BLOW. CONVEX HALF BROKEN AND GLUED TOGETHER. SPECIMENS 65mm x 10mm (2-9/16" x 3/8") & 5mm X 3mm (3/16" x 1/8"). ALBUMEN APPLIED.- 1 comment
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- francis creek shale
- mazon creek
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(and 3 more)
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From the album: Mark's Mazon Creek Fossils
BOTH HALVES OF SIDERITE CONCRETION, SPLIT BY HAMMER BLOW. SPLIT FACE APPROX. 45mm x 45mm (1-3/4" x 1-3/4"). ACETIC ACID BATH.- 1 comment
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- francis creek shale
- mazon creek
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(and 3 more)
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From the album: Mark's Mazon Creek Fossils
BOTH HALVES SIDERITE CONCRETION, SPLIT BY HAMMER BLOW. SPLIT FACE 55mm x 47mm (2-3/16" x 1-7/8"). LIGHT ACETIC ACID BATH.- 1 comment
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- francis creek shale
- mazon creek
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(and 3 more)
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From the album: Mark's Mazon Creek Fossils
BOTH HALVES SIDERITE CONCRETION, SPLIT BY LIGHT HAMMER TAP. SPECIMEN 88mm X 28mm (3-1/2" x 1-1/8").-
- francis creek shale
- mazon creek
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(and 3 more)
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From the album: Mark's Mazon Creek Fossils
BOTH HALVES SIDERITE CONCRETION, SPLIT BY FREEZE/THAW METHOD & LIGHT HAMMER BLOW. SPECIMEN 80mm X 25mm (3-1/8" x 1"). OVER A PERIOD OF ROUGHLY 15 YEARS THE CONVEX HALF CRACKED AND PART OF THE SPECIMEN'S SURFACE DETACHED. GLUED BACK INTO POSITION - BADLY.-
- francis creek shale
- mazon creek
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(and 3 more)
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From the album: Mark's Mazon Creek Fossils
BOTH HALVES SIDERITE CONCRETION, SPLIT BY HAMMER BLOW. SPECIMEN 101mm X 30mm (4" x 1-3/16").-
- francis creek shale
- mazon creek
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(and 3 more)
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From the album: Mark's Mazon Creek Fossils
BOTH HALVES SIDERITE CONCRETION, SPLIT BY HAMMER BLOW. SPECIMEN 80mm X 32mm (3-1/8" x 1-1/4"). CONVEX HALF PARTIALLY DISINTEGRATED DUE TO UNDERLYING LAYER OF PYRITE. SALVAGEABLE PIECES GLUED BACK INTO POSITION.-
- francis creek shale
- mazon creek
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(and 3 more)
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From the album: Mark's Mazon Creek Fossils
BOTH HALVES SIDERITE CONCRETION, SPLIT BY HAMMER BLOW. SPECIMEN 75mm X 22mm (2-15/16" x 7/8").-
- francis creek shale
- mazon creek
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(and 3 more)
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From the album: Mark's Mazon Creek Fossils
BOTH HALVES SIDERITE CONCRETION, SPLIT BY HAMMER BLOW. SPECIMEN 72mm X 6mm (2-7/8" x 1/4"). FRAGMENT OF CONVEX HALF GLUED INTO POSITION.-
- francis creek shale
- mazon creek
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(and 3 more)
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From the album: Mark's Mazon Creek Fossils
BOTH HALVES SIDERITE CONCRETION, SPLIT BY HAMMER BLOW. SPECIMEN 90mm X 20mm (3-9/16" x 13/16"). BOTH HALVES BROKEN - GLUED.-
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- francis creek shale
- mazon creek
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(and 3 more)
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From the album: Mark's Mazon Creek Fossils
BOTH HALVES SIDERITE CONCRETION, SPLIT BY HAMMER BLOW. SPECIMEN 66mm X 23mm (2-5/8" x 7/8"). CONVEX HALF BROKEN - GLUED.- 2 comments
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- francis creek shale
- mazon creek
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(and 3 more)
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From the album: Mark's Mazon Creek Fossils
BOTH HALVES SIDERITE CONCRETION, SPLIT BY HAMMER BLOW. SPECIMEN 110mm X 6mm (4-5/16" x 1/4"). BOTH HALVES FRAGMENTED & GLUED.-
- francis creek shale
- mazon creek
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(and 3 more)
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From the album: Mark's Mazon Creek Fossils
BOTH HALVES SIDERITE CONCRETION, SPLIT BY HAMMER BLOW. HEAVILY PYRITIZED, SPECIMEN 28mm X 26mm (1-1/8" x 1-1/16").-
- francis creek shale
- mazon creek
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(and 3 more)
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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. Over the weekend one nodule split open to expose this tiny bivalve. It is only about 9mm in size. I have tried in vain to identify it. Does anyone happen to know what this could be? Any help would be greatly appreciated.
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From the album: Mark's Mazon Creek Fossils
BOTH HALVES SIDERITE CONCRETION, SPLIT BY FREEZE/THAW METHOD & LIGHT HAMMER BLOW. SPECIMEN 52mm X 20mm (2-1/16" x 13/16").-
- francis creek shale
- mazon creek
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(and 3 more)
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From the album: Mark's Mazon Creek Fossils
CONCAVE HALF OF FRAGMENT OF SIDERITE CONCRETION, FOUND AS-IS. SPECIMEN, 70mm X 30mm (2-3/4" x 1-3/16").-
- francis creek shale
- mazon creek
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(and 3 more)
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From the album: Mark's Mazon Creek Fossils
BOTH HALVES SIDERITE CONCRETION, SPLIT BY HAMMER BLOW. SPECIMEN 64mm X 18mm (2-1/2" X 11/16"). CONCAVE HALF BROKEN ACROSS SPECIMEN - GLUED. ACETIC ACID BATH APPLIED.-
- francis creek shale
- mazon creek
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(and 3 more)
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