Split
Ammonites from Madagascar |
Description:
Spectacular ammonites from Madagascar which have been sagitally
split and polished to show wonderful detail within. Most of the
individual chambers are filled with Calcite crystals of various
colors, with the septa (divisions) between each chamber preserved
as contrasting Calcite, making for a superb display piece. Some
examples are not completely infilled, giving a fine “geode-like”
appearance. The Ammonidea have a rich evolutionary history which
began in the Upper Silurian. The order began an extensive radiation
in the Triassic and Jurassic, became most diverse during the Cretaceous,
only to become extinct during the late Cretaceous extinction event
which also saw the demise of the non-avian dinosaurs. Fossil ammonoids
that were quite cosmopolitan in distribution serve as valuable index
fossils used to date deposits around the world.
Name:
Ammonoidea
Age: Late Jurassic- Early Cretaceous
Location: Tulear, Madagascar
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Fossil Pictures for Larger View |
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| Name:
Cleoniceras
Size: 34 mm across
Code MSA01 - $12.50 |
Name:
Cleoniceras
Size: 36 mm across
Code MSA02 - $12.50 |
Name:
Cleoniceras
Size: 36 mm across
Code MSA03 - $12.50 |
Name:
Perisphinctes
Size: 34 mm across
Code MSA04 - $12.50 |
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Name:
Cleoniceras
Size: 32 mm across
Code MSA05 - $15.00 |
Name:
Cleoniceras
Size: 38 mm across
Code MSA06 - $15.00 |
Name:
Desmoceras
Size: 35 mm across
Code MSA07 - $15.00 |
Name:
Cleoniceras
Size: 39 mm across
Code MSA08 - $15.00 |
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Name:
Cleoniceras
Size: 46 mm across
Code MSA09 - $17.50 |
Name:
Desmoceras
Size: 40 mm across
Code MSA10 - $17.50 |
Name:
Desmoceras
Size: 40 mm across
Code MSA11 - $17.50 |
Name:
Perisphinctes
Size: 41 mm across
Code MSA12 - $17.50 |
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Name:
Cleoniceras
Size: 48 mm across
Code MSA13 - $20.00 |
Name:
Phylloceras
Size: 50 mm across
Code MSA14 - $20.00 |
Name:
Desmoceras
Size: 45 mm across
Code MSA15 - $20.00 |
Name:
Cleoniceras
Size: 50 mm across
Code MSA16 - $20.00 |
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