Planolites fossils have been found in Africa, Asia, Europe, Antarctica, and the Americas (with most specimens found in North America).23
Ichnospecies in Planolites include:45
"Planolites". KU Ichnology. IBGS Research Group. http://ichnology.ku.edu/invertebrate_traces/tfimages/planolites.html ↩
"PBDB". paleobiodb.org. https://paleobiodb.org/classic/basicTaxonInfo?taxon_no=83907 ↩
"Planolites Nicholson, 1873". www.gbif.org. https://www.gbif.org/species/4583768 ↩