perekond
Polarichnus Narbonne, Gibling et Jones, 1979
Taksoni kirjeldused
Narbonne et al., 1979
Diagnosis. U-sharped burrow formed perpendicular to stratification, with burrow cross-section sub-rectangular to elliptical. spreite absent; sedimentary laminae between the arms are domed upward and show a distinctive pattern of small-scale asymmetric folds and microthrusts.
Valik taksonit käsitlevast teaduskirjandusest
Davies, N. S., Sansom, I. J., Turner, P. 2006. Trace fossils and paleoenvironments of a Late Silurian marginal-marine/alluvial system: the Ringerike Group (Lower Old Red Sandstone), Oslo Region, Norway. Palaios 21, 1, 46-62. DOI:10.2110/palo.2003.p03-08
Leitud liigid
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Klassifikatsioon