Trace fossil · Bioerosion

Teredolites and Trypanites (borings)

Borings rather than burrows: Teredolites bore into wood or peat (woodgrounds), and Trypanites bore into hard rock or shell (hardgrounds).

Behavior: Bioerosion
Likely maker: Boring bivalves and other borers; the textbook illustrates piddock (Pholas) and angelwing bivalve borings.
Setting: Name-bearers of the Teredolites (woodground) and Trypanites (hardground) ichnofacies.

**Angelwing bivalve borings in intertidal sandstone (Trypanites).** Michael C. Rygel via Wikimedia Commons, CC BY-SA 3.0. Source

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All trace fossils Ichnofacies

Sources

Rygel & Quinton, Sedimentary Geology 9.6: Trace Fossils · KU Ichnology: Ichnofacies models