Helminthopsis Heer, 1877
Hanken et al., 2016
Description. This is a hypichnial, semicircular, loosely meandering ridge, which is 7 mm wide. It is preserved in semirelief in a sandstone bed.
Uchman et al., 2005b
Han and Pickerill (1995) and Wetzel and Bromley (1996) reviewed the ichnospecies of Helminthopsis. It is a eurybathic, facies-crossing trace fossil, common in flysch deposits and probably produced by polychaetes or priapulids (Ksiazkiewicz, 1977; Fillion and Pickerill, 1990). It occurs from the Cambrian (Crimes, 1987) to the Recent (Swinbanks and Murray, 1981; Wetzel, 1983a, b).
Uchman, 1998
Diagnosis: Simple, unbranched, elongate, cylindrical tube with curves, windings, or irregular open meanders (after Wetzel & Bromley, 1996).
Han & Pickerill, 1995
Diagnosis: strong, unbranched, irregularly winding or meandering, pre- or post-depositional horizontal burrows or trails that do not touch or cross. Only one order of meandering may be present. Burrow fill is unstructured and similar, coarser or finer in grain size to the surrounding material (after Heer, 1877; Książkiewicz, 1977; Fillion and Pickerill, 1984a, 1990).
- Hanken et al., 2016 Store Svartøya Upper Ordovician
- Crimes, 1992a