Fossilized traces of invertebrates
Numéro d’image : 11743275
| Jurassic trace fossils or track marks. Fossilized traces or tracks left by unknown invertebrate animals dated from the Middle Jurassic era (176 to 161 million years ago). The traces are smooth and curved which may indicate a gastropod such as a slug or snail. Commonly found fossils from the Jurassic geological era include bivalves,brachiopods and ammonites. The study of trace fossils is called ichnology. Trace fossils are most commonly found at the boundary between different rock sediments. Trace fossils are classified by their place of occurrence and their shape (for example,grooves or burrows). Sample from the Forest Marble Formation,which are thin sandstone beds at Watton Cliff,near Eype Mouth,Dorset,England | |
| Licence : | Droits gérés |
| Crédit: | Science Photo Library / Stammers, Sinclair |
| Taille de l’image : | 4686 px × 3815 px |
| Model Release : | Non requis |
| Property Release : | Non requis |
| Restrictions : | - |
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