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Ammonite marble
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Ammonite marble
Asteroceras (large shells) and Promicroceras (small shells) ammonites, seen here in the polished surface of a specimen of marble originating from the Lower Lias, near Yeovil, Somerset
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Media ID 8598919
© Mary Evans Picture Library 2015 - https://copyrighthub.org/s0/hub1/creation/maryevans/MaryEvansPictureID/10703630
Ammonite Ammonitida Ammonoid Ammonoidea Arietitidae Asteroceras Cephalopod Cephalopoda Chamber Early Jurassic Eoderocerataceae Eoderoceratidae Great Britain Jurassic Lias Lower Marble Mesozoic Metamorphic Mollusc Mollusca Mollusk Phanerozoic Invertebrata Lower Lias
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> Animals
> Mollusks
> Ammonoid
> Animals
> Mollusks
> Cephalopods
> Europe
> United Kingdom
> England
> Somerset
> Yeovil
EDITORS COMMENTS
1. Title: A Mesozoic Marvel: Ammonites in Ammonite Marble from the Lower Lias, Somerset, England This image showcases a stunning example of Ammonite marble, a metamorphic rock formation that preserves the intricate structures of ancient marine invertebrates, specifically Ammonites. The marble, originating from the Lower Lias formation near Yeovil, Somerset, in England, is a testament to the rich marine history of the Jurassic period in Europe. In the polished surface of the marble, the fossilized remains of two distinct types of Ammonites are clearly visible: Asteroceras and Promicroceras. Asteroceras, characterized by their large, globose, and often striated shells, are members of the Arietitidae family. These ammonites had large, complex siphuncles, which provided buoyancy and enabled them to maintain their position in the water column. The smaller, more intricately patterned shells belong to the Promicroceras species, which are part of the Eoderoceratidae family. These ammonites had smaller, more coiled shells, and their siphuncles were less complex than their larger counterparts. The presence of these two distinct types of Ammonites within the same marble specimen provides valuable insights into the diverse marine ecosystems of the Early Jurassic period. This discovery underscores the importance of the Lower Lias formation as a significant source of information about the Mesozoic era, a time when the Earth's biosphere underwent remarkable transformations. As Cephalopods, Ammonites are part of the Phanerozoic Eon's Mollusca class, and their fossilized remains offer invaluable data for paleontologists and geologists studying the Earth's history. The intricate details preserved in this Ammonite marble specimen serve as a reminder of the beauty and complexity of the natural world, inviting us to explore the wonders of the past and the ongoing mysteries of the geological record.
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