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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 45mm X 13mm (1-3/4" x 1/2"). CONCAVE HALF BROKEN ACROSS SPECIMEN - GLUED.-
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- francis creek shale
- ne illinois
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From the album: Mark's Mazon Creek Fossils
BOTH HALVES SIDERITE CONCRETION, SPLIT BY FREEZE/THAW METHOD & LIGHT HAMMER TAP. SPECIMEN 60mm X 40mm (2-3/8" x 1-5/8").-
- 2
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- mazon creek
- pennsylvanian
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From the album: Mark's Mazon Creek Fossils
CONCAVE HALF OF SIDERITE CONCRETION, FOUND AS-IS. SPECIMEN 100mm X 35mm (3-15/16" x 1-3/8").-
- mazon creek
- francis creek shale
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From the album: Mark's Mazon Creek Fossils
BOTH HALVES SIDERITE CONCRETION, SPLIT BY FREEZE-THAW & LIGHT HAMMER BLOW. MULTIPLE PINNAE. SPECIMEN 100mm X 50mm (3-15/16" x 2").-
- 2
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- mazon creek
- pennsylvanian
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From the album: Mark's Mazon Creek Fossils
BOTH HALVES SIDERITE CONCRETION, SPLIT BY FREEZE-THAW & LIGHT HAMMER TAPS. SPECIMEN 95mm X 30mm (3-3/4" x 1-3/16"). YELLOW DEXTRIN APPLIED TO SPECIMEN.-
- 1
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- mazon creek
- pennsylvanian
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From the album: Mark's Mazon Creek Fossils
BOTH HALVES SIDERITE CONCRETION, SPLIT BY HAMMER BLOW. TWO TEETH - SPECIMENS 12mm X 8mm (1/2" x 5/16") AND 8mm X 5mm (5/16" x 3/16") . MOST OF EACH TOOTH IS BURIED IN THE MATRIX. BROKEN PIECE OF MATRIX GLUED BACK INTO POSITION PARTIALLY COVERING ONE OF THE TEETH.-
- 3
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- pennsylvanian
- ne illinois
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From the album: Mark's Mazon Creek Fossils
BOTH HALVES SIDERITE CONCRETION, SPLIT BY FREEZE-THAW & LIGHT HAMMER BLOW. SPECIMEN 38mm X 15mm (1-1/2" x 5/8").-
- 1
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- mazon creek
- pennsylvanian
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From the album: Mark's Mazon Creek Fossils
BOTH HALVES SIDERITE CONCRETION, SPLIT BY HAMMER BLOW. SPECIMEN 25mm X 10mm (1" x 3/8"). "FISH" SHAPED.-
- mazon creek
- francis creek shale
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From the album: Mark's Mazon Creek Fossils
BOTH HALVES SIDERITE CONCRETION, SPLIT BY HAMMER BLOW. SPECIMEN 35mm X 35mm (1-3/8" x 1-3/8").-
- mazon creek
- pennsylvanian
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From the album: Mark's Mazon Creek Fossils
BOTH HALVES SIDERITE CONCRETION, SPLIT BY HAMMER BLOW. SPECIMEN 28mm X 8mm (1-1/8" x 5/16").-
- mazon creek
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From the album: Mark's Mazon Creek Fossils
BOTH HALVES SIDERITE CONCRETION, SPLIT BY HAMMER BLOW. SPECIMEN, INCLUDING SIDE BRANCH, 30mm X 12mm (1-3/16" x 1/2").-
- mazon creek
- pennsylvanian
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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.-
- ne illinois
- pennsylvanian
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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").-
- ne illinois
- pennsylvanian
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From the album: Mark's Mazon Creek Fossils
BOTH HALVES SIDERITE CONCRETION, SPLIT BY HAMMER BLOW. SPECIMEN 123mm X 9mm (4-7/8" x 3/8"), AVERAGE. INTERNODAL LENGTH 76mm (3"). SMALL PORTION NEAR TIP OF CONVEX HALF GLUED. YELLOW DEXTRIN APPLIED TO SPECIMEN.-
- mazon creek
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C0034 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 HAMMER BLOW. SPECIMEN 20mm X 17mm (13/16" x 11/16"). CONVEX HALF BROKEN NEAR, BUT NOT INTO SPECIMEN - GLUED.-
- ne illinois
- pennsylvanian
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From the album: Mark's Mazon Creek Fossils
BOTH HALVES SIDERITE CONCRETION, SPLIT BY HAMMER BLOW. SPECIMEN 55mm X 35mm (2-1/8" x 1-3/8"). TWO INCOMPLETE WHORLS.-
- mazon creek
- francis creek shale
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From the album: Mark's Mazon Creek Fossils
BOTH HALVES SIDERITE CONCRETION, SPLIT BY HAMMER BLOW. SPECIMEN 18mm X 6mm (11/16" x 1/4").-
- mazon creek
- pennsylvanian
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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.-
- ne illinois
- pennsylvanian
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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.-
- ne illinois
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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").-
- ne illinois
- pennsylvanian
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From the album: Mark's Mazon Creek Fossils
BOTH HALVES SIDERITE CONCRETION, SPLIT BY HAMMER BLOW. SPECIMEN, 85mm X 55mm (3-3/8" x 2-3/16"). YELLOW DEXTRIN APPLIED TO SPECIMEN.-
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- mazon creek
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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.-
- ne illinois
- pennsylvanian
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From the album: Mark's Mazon Creek Fossils
BOTH HALVES SIDERITE CONCRETION, SPLIT BY HAMMER BLOW. SPECIMEN 75mm x 50mm (2-15/16" x 1-15/16"). PAINTED WITH YELLOW DEXTRIN TO INCREASE CONTRAST.-
- 3
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- mazon creek
- ne illinois
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From the album: Mark's Mazon Creek Fossils
BOTH HALVES SIDERITE CONCRETION, SPLIT BY HAMMER BLOW. SPECIMEN 60mm X 50mm (2-3/8" x 2"). BADLY WEATHERED. YELLOW DEXTRIN APPLIED TO SPECIMEN.-
- 1
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- mazon creek
- pennsylvanian
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From the album: Mark's Mazon Creek Fossils
BOTH HALVES SIDERITE CONCRETION, FOUND AS IS. CONCAVE HALF SEVERELY WEATHERED. SPECIMEN 30mm X 20mm (1-3/16" X 13/16").-
- mazon creek
- pennsylvanian
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