Ancorichnus
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Template:Short description Ancorichnus is an ichnogenus.[1] Ancorichnus, is distinguished by structured mantle peripheral to a meniscate core. The mantle is not considered as a wall structure since it formed by the locomotive behaviour of the burrow producer.[2] This ichnotaxon occurs in full relief at the top of grainstone beds 10 and 12. It is a non-branched, cylindrical, horizontal burrow with a diameter of 0.2-0.3 cm and 0.3-0.4 cm, respectively.[3]