Table 3.

The main ichnofabric types observed in cores PS92/039 and PS92/045, here defined as Ethological class 1–3. Behavioral associations for the different ichnotaxa follow Blanpied and Bellaiche; Fu and Werner; Wetzel^44,62,63,65.

Ethological Class 1 Deposit feeders	Ethological Class 2 Chemosymbionts	Ethological Class 3 Laminated No bioturbation
Planolites-like Scolicia-like Less dense burrow Lined burrows Other burrows Biodeformational structures	Trichichnus-like Mycellia-like Chondrites-like Walled-tube burrow	Primary layering preserved, no ichnofossil observed