Yakutatia Hantzschel 1962
DESCRIPTION: Burrow system consisting of approximately two symmetrical spirals with side branches arranged in a Cyrtograptus-like pattern, varying in thickness from 2-6 mm, bifurcating 1-3 times forming 1 to 1.7 volutions about acuminate inner extremity, outer end obtuse.
BEHAVIOR(S): Fodinichia (sediment foraging)
ENVIRONMENTAL SETTINGS: Marine flysch deposits
POSSIBLE TRACEMAKERS: Cretaceous-Tertiary (Seilacher, 1977)
GEOLOGIC RANGE: Marine worms
ADDITIONAL REFERENCES: Seilacher, 1977
REMARKS: One of the radiating graphoglyptids