Gnathichnus
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| Gnathichnus | |
|---|---|
 | |
| Gnathichnus pentax echinoid trace fossil on an oyster from the Cenomanian of Hamakhtesh Hagadol, southern Israel. | |
Trace fossil classification  | |
| Ichnofamily: | †Gnathichnidae |
| Ichnogenus: | †Gnathichnus Bromley, 1975 |
| Type ichnospecies | |
| Gnathichnus pentax Bromley, 1975 | |
| Synonyms[1] | |
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Gnathichnus is a trace fossil on a hard substrate (typically a shell, rock or hardground made of calcium carbonate) formed by regular echinoids as they scraped the surface with their five-toothed Aristotle's Lantern feeding structures.[2]
