Tomaculum Groom 1902
DESCRIPTION: Round-ended cylindrical bodies of about 1.5 mm in length and about 0.5 mm in diameter. The bodies are composed of material different from that of the matrix and are homogeneous throughout. They usually occurred loosely strung out in clusters. The pellets can be up to 10 cm long and 1-2 cm broad, on bedding planes.
BEHAVIOR(S): Feeding
ENVIRONMENTAL SETTINGS: Marine, Tomaculum is indicative generally of deep-water deposition, whether in distal shelf or deep basinal settings (Benton & Trewin, 1978).
POSSIBLE TRACEMAKERS: Possibly trilobites or annelid worms
GEOLOGIC RANGE: Ordovician-possibly recent. Similar pellets have been found in Mesozoic and Cenozoic sediments but the identification is not certain.
ADDITIONAL REFERENCES: Whittard, 1953; Mikuláš and Slavíčková , 2001
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