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n.1.(Paleon.) An ancient wormhole in sand, preserved in the rocks.
References in periodicals archive ?
Trace fossils include Skolithos, Taenidium, and broad Arenicolites.
The upper discoid-bearing bed varies from 1-8 cm thick and bears Arenicolites, Palaeophycus, Planolites, and Rusophycus (bbi: 3, ii: 1), as well as ~8 cm wavelength, 1.