Ichnofossils

Lockeia James, 1879

Taxon description

Hammersburg et al., 2018

Diagnosis.—Amygdaloidal- to ovoid-shaped mounds (convex hyporelief ) or depressions (concave epirelief ) that taper at one or both ends; surface usually smooth but may be irregular; may have a medial longitudinal crest (hyporelief ) or groove (epirelief ) (Osgood, 1970; Fillion & Pickerill, 1990; Mángano & others, 2002].

Schlirf et al., 2001

Emended diagnosis: Bilaterally symmetrical, elongated, commonly almond-shaped, heart-shaped, club-shaped to dumbbell-like or rarely of triangular shape, with smooth margin; predominantly preserved as isolated or row-like arrangements of, hypichnial mounds; single segments commonly with a distinct median crest. Vertical spreitemay be present.

Selection of related publications
Toom, U., Vinn, O., Hints, O. 2019. Ordovician and Silurian ichnofossils from carbonate facies in Estonia: A collection-based review. Palaeoworld 28, 1-2, 123-144. DOI:10.1016/j.palwor.2018.07.001
Mikuláš, R., Meškis, S., Ivanov, A., Lukševičs, E., Zupinš, I., Stinkulis, G. 2013. A rich ichnofossil assemblage from the Frasnian (Upper Devonian) deposits at Andoma Hill, Onega Lake, Russia. Bulletin of Geosciences 88, 2, 389-400. DOI:10.3140/bull.geosci.1358
Knaust, D. 2004. Cambro-Ordovician trace fossils from the SW-Norwegian Caledonides. Geological Journal 39, 1, 1-24. DOI:10.1002/gj.941
Crimes, T. P. 1992. Changes in the trace fossil biota across the Proterozoic-Phanerozoic boundary. Journal of the Geological Society 149, 4, 637-646. DOI:10.1144/gsjgs.149.4.0637
Palij, V. M., Posti, E., Fedonkin, M. A. 1979. Soft-bodied Metazoa and trace fossils of Vendian and Lower Cambrian. Upper Precambrian and Cambrian Paleontology of East-European Platform, pp. 49-82.
References based on distribution