Английская Википедия:Gnathichnus

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Файл:Gnathichnus Cenomanian 020413.JPG
Gnathichnus pentax echinoid trace fossil on an oyster from the Cenomanian of Hamakhtesh Hagadol, southern Israel.
Файл:Strongylocentrotus purpuratus 020313.JPG
Oral surface of Strongylocentrotus purpuratus showing the teeth of the Aristotle's Lantern, which can make the trace Gnathichnus.

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 (Bromley, 1975).

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Шаблон:Trace-fossil-stub