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Polished ammonite fossil

Polished ammonite fossil

C039/4758

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100.0 MB (8.0 MB compressed)

6708 x 5210 pixels

56.9 x 44.2 cm ⏐ 22.4 x 17.4 in (300dpi)

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Credit

DIRK WIERSMA / SCIENCE PHOTO LIBRARY DIRK WIERSMA / SCIENCE PHOTO LIBRARY

Caption

Shell of a fossil ammonite (Pseudolioceras sp.), sliced in half across its plane of symmetry, exposing its internal chambers. This cephalopod lived as early as Devonian times, but peaked during the Jurassic and Cretaceous periods. They were marine cuttlefish, along with squids, octopuses and nautilus, living a floating life in open sea. Ammonites had spiralling shells, the interiors of which were divided in small chambers separated by winding partitions, well displayed in this picture. They died out at the end of the Cretaceous. Actual diameter of this specimen approximately 45 mm.

Release details

Model release not required. Property release not required.

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