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.[1]
Notes and References
Bromley, R.G. . 1975 . Comparative analysis of fossil and recent echinoid bioerosion . Palaeontology . 18 . 725–739.
