Polykladichnus Fursich, 1891
DESCRIPTION: Infaunal burrow with a vertical shaft that branches upward near the bedding surface into a y-shaped burrow, usually connecting to bedding surface. Burrows vary from 3-5 mm in diameter and are at least 15 cm in length, and can have branching at several levels, as well as second order branching. Tubes are circular in cross-section and have unornamented walls and do not have widened junctions at points of bifurcation.
BEHAVIOR(S): Domichnia, Fodinichnia (suspension-feeding)
ENVIRONMENTAL SETTINGS: Marine
POSSIBLE TRACEMAKERS: Polychaete worm, or other wormlike organism
GEOLOGIC RANGE: Upper Jurassic-Pleistocene
ADDITIONAL REFERENCES: Pemberton & Jones (1988)
REMARKS: Description from Pemberton & Jones (1988). Polykladichnus can be confused with Skolithos if y-shaped branching near bedding surface is not preserved.
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