Phycodes Richter, 1850

DESCRIPTION: Bundled splayed pattern of horizontal burrows originating from a central base point and fan outwards in a broom-like pattern of individual burrows. Proximal part of main tunnels unbranched, distal tunnels divide at acute angles into several free cylindrical tunnels. Cross-section of the branches may show structure similar to retrusive spreiten.

BEHAVIOR(S): Fodinichnia (deposit feeding).

ENVIRONMENTAL SETTINGS: Fully marine. Environments subjected to frequent episodic depositional events. Common in tidally influenced zones.

POSSIBLE TRACEMAKERS: Burrowing marine organisms such as worms, vermiform organisms. Burrows made by repeated probes by an organism into the sediment that moves upward toward the surface.

GEOLOGIC RANGE: Cambrian-recent.

ADDITIONAL REFERENCES: Fillion and Pickerill, 1990

REMARKS: Similar in morphology to Arthrophycus, Asterosoma, Asterophycus, and Teichichnus.
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